diff --git a/changelogs/fragments/bye_become_mixin.yml b/changelogs/fragments/bye_become_mixin.yml
new file mode 100644
index 00000000000..076d05601a8
--- /dev/null
+++ b/changelogs/fragments/bye_become_mixin.yml
@@ -0,0 +1,2 @@
+bugfixes:
+    - remove obsolete become mixin
diff --git a/lib/ansible/playbook/base.py b/lib/ansible/playbook/base.py
index 55530938252..74357e39f96 100644
--- a/lib/ansible/playbook/base.py
+++ b/lib/ansible/playbook/base.py
@@ -195,11 +195,6 @@ class FieldAttributeBase(with_metaclass(BaseMeta, object)):
 
     def preprocess_data(self, ds):
         ''' infrequently used method to do some pre-processing of legacy terms '''
-
-        for base_class in self.__class__.mro():
-            method = getattr(self, "_preprocess_data_%s" % base_class.__name__.lower(), None)
-            if method:
-                return method(ds)
         return ds
 
     def load_data(self, ds, variable_manager=None, loader=None):
@@ -615,8 +610,12 @@ class Base(FieldAttributeBase):
     # explicitly invoke a debugger on tasks
     _debugger = FieldAttribute(isa='string')
 
-    # param names which have been deprecated/removed
-    DEPRECATED_ATTRIBUTES = [
-        'sudo', 'sudo_user', 'sudo_pass', 'sudo_exe', 'sudo_flags',
-        'su', 'su_user', 'su_pass', 'su_exe', 'su_flags',
-    ]
+    # Privilege escalation
+    _become = FieldAttribute(isa='bool', default=context.cliargs_deferred_get('become'))
+    _become_method = FieldAttribute(isa='string', default=context.cliargs_deferred_get('become_method'))
+    _become_user = FieldAttribute(isa='string', default=context.cliargs_deferred_get('become_user'))
+    _become_flags = FieldAttribute(isa='string', default=context.cliargs_deferred_get('become_flags'))
+    _become_exe = FieldAttribute(isa='string', default=context.cliargs_deferred_get('become_exe'))
+
+    # used to hold sudo/su stuff
+    DEPRECATED_ATTRIBUTES = []
diff --git a/lib/ansible/playbook/become.py b/lib/ansible/playbook/become.py
deleted file mode 100644
index cdaa0ce8a44..00000000000
--- a/lib/ansible/playbook/become.py
+++ /dev/null
@@ -1,93 +0,0 @@
-# (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.com>
-#
-# This file is part of Ansible
-#
-# Ansible is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# Ansible is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
-
-# Make coding more python3-ish
-from __future__ import (absolute_import, division, print_function)
-__metaclass__ = type
-
-from ansible import constants as C
-from ansible import context
-from ansible.errors import AnsibleParserError
-from ansible.playbook.attribute import FieldAttribute
-from ansible.utils.display import Display
-
-display = Display()
-
-
-class Become:
-
-    # Privilege escalation
-    _become = FieldAttribute(isa='bool', default=context.cliargs_deferred_get('become'))
-    _become_method = FieldAttribute(isa='string', default=context.cliargs_deferred_get('become_method'))
-    _become_user = FieldAttribute(isa='string', default=context.cliargs_deferred_get('become_user'))
-    _become_flags = FieldAttribute(isa='string')
-
-    def __init__(self):
-        super(Become, self).__init__()
-
-    def _detect_privilege_escalation_conflict(self, ds):
-
-        # Fail out if user specifies conflicting privilege escalations
-        has_become = 'become' in ds or 'become_user'in ds
-        has_sudo = 'sudo' in ds or 'sudo_user' in ds
-        has_su = 'su' in ds or 'su_user' in ds
-
-        if has_become:
-            msg = 'The become params ("become", "become_user") and'
-            if has_sudo:
-                raise AnsibleParserError('%s sudo params ("sudo", "sudo_user") cannot be used together' % msg)
-            elif has_su:
-                raise AnsibleParserError('%s su params ("su", "su_user") cannot be used together' % msg)
-        elif has_sudo and has_su:
-            raise AnsibleParserError('sudo params ("sudo", "sudo_user") and su params ("su", "su_user") cannot be used together')
-
-    def _preprocess_data_become(self, ds):
-        """Preprocess the playbook data for become attributes
-
-        This is called from the Base object's preprocess_data() method which
-        in turn is called pretty much anytime any sort of playbook object
-        (plays, tasks, blocks, etc) is created.
-        """
-
-        self._detect_privilege_escalation_conflict(ds)
-
-        # Privilege escalation, backwards compatibility for sudo/su
-        if 'sudo' in ds or 'sudo_user' in ds:
-            ds['become_method'] = 'sudo'
-            if 'sudo' in ds:
-                ds['become'] = ds['sudo']
-                del ds['sudo']
-
-            if 'sudo_user' in ds:
-                ds['become_user'] = ds['sudo_user']
-                del ds['sudo_user']
-
-            display.deprecated("Instead of sudo/sudo_user, use become/become_user and make sure become_method is 'sudo' (default)", '2.9')
-
-        elif 'su' in ds or 'su_user' in ds:
-            ds['become_method'] = 'su'
-            if 'su' in ds:
-                ds['become'] = ds['su']
-                del ds['su']
-
-            if 'su_user' in ds:
-                ds['become_user'] = ds['su_user']
-                del ds['su_user']
-
-            display.deprecated("Instead of su/su_user, use become/become_user and set become_method to 'su' (default is sudo)", '2.9')
-
-        return ds
diff --git a/lib/ansible/playbook/block.py b/lib/ansible/playbook/block.py
index 103b7e4b1f7..2bd7bd8a41e 100644
--- a/lib/ansible/playbook/block.py
+++ b/lib/ansible/playbook/block.py
@@ -22,7 +22,6 @@ __metaclass__ = type
 from ansible.errors import AnsibleParserError
 from ansible.playbook.attribute import FieldAttribute
 from ansible.playbook.base import Base
-from ansible.playbook.become import Become
 from ansible.playbook.conditional import Conditional
 from ansible.playbook.collectionsearch import CollectionSearch
 from ansible.playbook.helpers import load_list_of_tasks
@@ -31,7 +30,7 @@ from ansible.playbook.taggable import Taggable
 from ansible.utils.sentinel import Sentinel
 
 
-class Block(Base, Become, Conditional, CollectionSearch, Taggable):
+class Block(Base, Conditional, CollectionSearch, Taggable):
 
     # main block fields containing the task lists
     _block = FieldAttribute(isa='list', default=list, inherit=False)
diff --git a/lib/ansible/playbook/play.py b/lib/ansible/playbook/play.py
index 386f5871c0a..706d3962224 100644
--- a/lib/ansible/playbook/play.py
+++ b/lib/ansible/playbook/play.py
@@ -25,7 +25,6 @@ from ansible.errors import AnsibleParserError, AnsibleAssertionError
 from ansible.module_utils.six import string_types
 from ansible.playbook.attribute import FieldAttribute
 from ansible.playbook.base import Base
-from ansible.playbook.become import Become
 from ansible.playbook.block import Block
 from ansible.playbook.collectionsearch import CollectionSearch
 from ansible.playbook.helpers import load_list_of_blocks, load_list_of_roles
@@ -40,7 +39,7 @@ display = Display()
 __all__ = ['Play']
 
 
-class Play(Base, Taggable, Become, CollectionSearch):
+class Play(Base, Taggable, CollectionSearch):
 
     """
     A play is a language feature that represents a list of roles and/or
diff --git a/lib/ansible/playbook/role/__init__.py b/lib/ansible/playbook/role/__init__.py
index a00db31b59a..bb304fa755f 100644
--- a/lib/ansible/playbook/role/__init__.py
+++ b/lib/ansible/playbook/role/__init__.py
@@ -26,7 +26,6 @@ from ansible.module_utils.six import iteritems, binary_type, text_type
 from ansible.module_utils.common._collections_compat import Container, Mapping, Set, Sequence
 from ansible.playbook.attribute import FieldAttribute
 from ansible.playbook.base import Base
-from ansible.playbook.become import Become
 from ansible.playbook.collectionsearch import CollectionSearch
 from ansible.playbook.conditional import Conditional
 from ansible.playbook.helpers import load_list_of_blocks
@@ -92,7 +91,7 @@ def hash_params(params):
     return frozenset((params,))
 
 
-class Role(Base, Become, Conditional, Taggable, CollectionSearch):
+class Role(Base, Conditional, Taggable, CollectionSearch):
 
     _delegate_to = FieldAttribute(isa='string')
     _delegate_facts = FieldAttribute(isa='bool')
diff --git a/lib/ansible/playbook/role/definition.py b/lib/ansible/playbook/role/definition.py
index c5999bb1b33..b18f1d16525 100644
--- a/lib/ansible/playbook/role/definition.py
+++ b/lib/ansible/playbook/role/definition.py
@@ -27,7 +27,6 @@ from ansible.module_utils.six import iteritems, string_types
 from ansible.parsing.yaml.objects import AnsibleBaseYAMLObject, AnsibleMapping
 from ansible.playbook.attribute import Attribute, FieldAttribute
 from ansible.playbook.base import Base
-from ansible.playbook.become import Become
 from ansible.playbook.collectionsearch import CollectionSearch
 from ansible.playbook.conditional import Conditional
 from ansible.playbook.taggable import Taggable
@@ -41,7 +40,7 @@ __all__ = ['RoleDefinition']
 display = Display()
 
 
-class RoleDefinition(Base, Become, Conditional, Taggable, CollectionSearch):
+class RoleDefinition(Base, Conditional, Taggable, CollectionSearch):
 
     _role = FieldAttribute(isa='string')
 
diff --git a/lib/ansible/playbook/task.py b/lib/ansible/playbook/task.py
index 68204b49684..4854801dc6d 100644
--- a/lib/ansible/playbook/task.py
+++ b/lib/ansible/playbook/task.py
@@ -30,7 +30,6 @@ from ansible.parsing.yaml.objects import AnsibleBaseYAMLObject, AnsibleMapping
 from ansible.plugins.loader import lookup_loader
 from ansible.playbook.attribute import FieldAttribute
 from ansible.playbook.base import Base
-from ansible.playbook.become import Become
 from ansible.playbook.block import Block
 from ansible.playbook.collectionsearch import CollectionSearch
 from ansible.playbook.conditional import Conditional
@@ -45,7 +44,7 @@ __all__ = ['Task']
 display = Display()
 
 
-class Task(Base, Conditional, Taggable, Become, CollectionSearch):
+class Task(Base, Conditional, Taggable, CollectionSearch):
 
     """
     A task is a language feature that represents a call to a module, with given arguments and other parameters.
diff --git a/test/units/playbook/test_base.py b/test/units/playbook/test_base.py
index a8dcf848744..dc3509577e1 100644
--- a/test/units/playbook/test_base.py
+++ b/test/units/playbook/test_base.py
@@ -367,12 +367,6 @@ class BaseSubClass(base.Base):
     _test_attr_method_missing = FieldAttribute(isa='string', default='some attr with a missing getter',
                                                always_post_validate=True)
 
-    def _preprocess_data_basesubclass(self, ds):
-        return ds
-
-    def preprocess_data(self, ds):
-        return super(BaseSubClass, self).preprocess_data(ds)
-
     def _get_attr_test_attr_method(self):
         return 'foo bar'
 
diff --git a/test/units/playbook/test_become.py b/test/units/playbook/test_become.py
deleted file mode 100644
index 3501dc856c3..00000000000
--- a/test/units/playbook/test_become.py
+++ /dev/null
@@ -1,100 +0,0 @@
-# -*- coding: utf-8 -*-
-# (c) 2018 Matt Martz <matt@sivel.net>
-# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
-
-from __future__ import absolute_import, division, print_function
-__metaclass__ = type
-
-import re
-
-from ansible.errors import AnsibleParserError
-from ansible.playbook.become import Become
-from ansible.module_utils._text import to_native
-
-import pytest
-
-
-class InString(str):
-    def __eq__(self, other):
-        return self in other
-
-
-@pytest.mark.parametrize("ds", [
-    {},
-    {'become': True},
-    {'become_user': 'root'},
-    {'sudo': True},
-    {'sudo_user': 'root'},
-    {'su': True},
-    {'su_user': 'root'}
-])
-def test_detect_privilege_escalation_conflict_valid(ds):
-    become = Become()
-    become._detect_privilege_escalation_conflict(ds)
-
-
-@pytest.mark.parametrize("ds,message", [
-    ({'become': True, 'sudo': True}, re.compile('"become".*"sudo"')),
-    ({'become': True, 'su': True}, re.compile('"become".*"su"')),
-    ({'sudo': True, 'su': True}, re.compile('"sudo".*"su"')),
-    ({'become_user': 'root', 'sudo': True}, re.compile('"become".*"sudo"')),
-    ({'sudo_user': 'root', 'su': True}, re.compile('"sudo".*"su"')),
-])
-def test_detect_privilege_escalation_conflict_invalid(ds, message):
-    become = Become()
-    with pytest.raises(AnsibleParserError) as excinfo:
-        become._detect_privilege_escalation_conflict(ds)
-    assert message.search(excinfo.value.message) is not None
-
-
-def test_preprocess_data_become(mocker):
-    display_mock = mocker.patch('ansible.playbook.become.display')
-
-    become = Become()
-    ds = {}
-    assert become._preprocess_data_become(ds) == {}
-
-    display_mock.reset_mock()
-    ds = {'sudo': True}
-    out = become._preprocess_data_become(ds)
-    assert 'sudo' not in out
-    assert out.get('become_method') == 'sudo'
-    display_mock.deprecated.assert_called_once_with(
-        "Instead of sudo/sudo_user, use become/become_user and make sure become_method is 'sudo' (default)",
-        '2.9'
-    )
-
-    ds = {'sudo_user': 'root'}
-    out = become._preprocess_data_become(ds)
-    assert 'sudo_user' not in out
-    assert out.get('become_user') == 'root'
-
-    ds = {'sudo': True, 'sudo_user': 'root'}
-    out = become._preprocess_data_become(ds)
-    assert 'sudo' not in out
-    assert 'sudo_user' not in out
-    assert out.get('become_method') == 'sudo'
-    assert out.get('become_user') == 'root'
-
-    display_mock.reset_mock()
-    ds = {'su': True}
-    out = become._preprocess_data_become(ds)
-    assert 'su' not in out
-    assert out.get('become_method') == 'su'
-    display_mock.deprecated.assert_called_once_with(
-        "Instead of su/su_user, use become/become_user and set become_method to 'su' (default is sudo)",
-        '2.9'
-    )
-    display_mock.reset_mock()
-
-    ds = {'su_user': 'root'}
-    out = become._preprocess_data_become(ds)
-    assert 'su_user' not in out
-    assert out.get('become_user') == 'root'
-
-    ds = {'su': True, 'su_user': 'root'}
-    out = become._preprocess_data_become(ds)
-    assert 'su' not in out
-    assert 'su_user' not in out
-    assert out.get('become_method') == 'su'
-    assert out.get('become_user') == 'root'
diff --git a/test/units/playbook/test_play_context.py b/test/units/playbook/test_play_context.py
index 9bb3285973c..4deabf93b05 100644
--- a/test/units/playbook/test_play_context.py
+++ b/test/units/playbook/test_play_context.py
@@ -140,6 +140,7 @@ def test_play_context_make_become_cmd(mocker, parser, reset_cli_args):
                                                                       default_exe, success, default_cmd), cmd) is not None)
 
     play_context.become_pass = None
+    play_context.become_method = 'su'
     play_context.set_become_plugin(become_loader.get('su'))
     play_context.become_flags = su_flags
     cmd = play_context.make_become_cmd(cmd=default_cmd, executable="/bin/bash")
@@ -147,33 +148,39 @@ def test_play_context_make_become_cmd(mocker, parser, reset_cli_args):
                                                                       success, default_cmd), cmd) is not None)
 
     play_context.set_become_plugin(become_loader.get('pbrun'))
+    play_context.become_method = 'pbrun'
     play_context.become_flags = pbrun_flags
     cmd = play_context.make_become_cmd(cmd=default_cmd, executable="/bin/bash")
     assert re.match("""%s %s -u %s 'echo %s; %s'""" % (pbrun_exe, pbrun_flags, play_context.become_user,
                                                        success, default_cmd), cmd) is not None
 
     play_context.set_become_plugin(become_loader.get('pfexec'))
+    play_context.become_method = 'pfexec'
     play_context.become_flags = pfexec_flags
     cmd = play_context.make_become_cmd(cmd=default_cmd, executable="/bin/bash")
     assert re.match('''%s %s "'echo %s; %s'"''' % (pfexec_exe, pfexec_flags, success, default_cmd), cmd) is not None
 
     play_context.set_become_plugin(become_loader.get('doas'))
+    play_context.become_method = 'doas'
     play_context.become_flags = doas_flags
     cmd = play_context.make_become_cmd(cmd=default_cmd, executable="/bin/bash")
     assert (re.match("""%s %s -u %s %s -c 'echo %s; %s'""" % (doas_exe, doas_flags, play_context.become_user, default_exe, success,
                                                               default_cmd), cmd) is not None)
 
     play_context.set_become_plugin(become_loader.get('ksu'))
+    play_context.become_method = 'ksu'
     play_context.become_flags = ksu_flags
     cmd = play_context.make_become_cmd(cmd=default_cmd, executable="/bin/bash")
     assert (re.match("""%s %s %s -e %s -c 'echo %s; %s'""" % (ksu_exe, play_context.become_user, ksu_flags,
                                                               default_exe, success, default_cmd), cmd) is not None)
 
     play_context.set_become_plugin(become_loader.get('bad'))
+    play_context.become_method = 'bad'
     with pytest.raises(AnsibleError):
         play_context.make_become_cmd(cmd=default_cmd, executable="/bin/bash")
 
     play_context.set_become_plugin(become_loader.get('dzdo'))
+    play_context.become_method = 'dzdo'
     play_context.become_flags = dzdo_flags
     cmd = play_context.make_become_cmd(cmd=default_cmd, executable="/bin/bash")
     assert re.match("""%s %s -u %s %s -c 'echo %s; %s'""" % (dzdo_exe, dzdo_flags, play_context.become_user, default_exe,