remove old imports from junos shared module (#17655)

this cleans up the old import mechanisms in the junos shared module

lib/ansible/module_utils/junos.py

@@ -22,14 +22,10 @@ import shlex
 from distutils.version import LooseVersion
 
 from ansible.module_utils.pycompat24 import get_exception
-from ansible.module_utils.network import NetworkError, NetworkModule
 from ansible.module_utils.network import register_transport, to_list
 from ansible.module_utils.shell import CliBase
 from ansible.module_utils.six import string_types
 
-# temporary fix until modules are update.  to be removed before 2.2 final
-from ansible.module_utils.network import get_module
-
 try:
     from jnpr.junos import Device
     from jnpr.junos.utils.config import Config