diff --git a/changelogs/fragments/blockinfile-unused-code.yml b/changelogs/fragments/blockinfile-unused-code.yml
new file mode 100644
index 00000000000..37c0ee65038
--- /dev/null
+++ b/changelogs/fragments/blockinfile-unused-code.yml
@@ -0,0 +1,2 @@
+minor_changes:
+   - blockinfile - Remove unused code for Ansible 1.x.
diff --git a/lib/ansible/modules/blockinfile.py b/lib/ansible/modules/blockinfile.py
index fde44b5d600..668c67a3c40 100644
--- a/lib/ansible/modules/blockinfile.py
+++ b/lib/ansible/modules/blockinfile.py
@@ -265,9 +265,6 @@ def main():
     marker0 = re.sub(b(r'{mark}'), b(params['marker_begin']), marker) + b(os.linesep)
     marker1 = re.sub(b(r'{mark}'), b(params['marker_end']), marker) + b(os.linesep)
     if present and block:
-        # Escape sequences like '\n' need to be handled in Ansible 1.x
-        if module.ansible_version.startswith('1.'):
-            block = re.sub('', block, '')
         if not block.endswith(b(os.linesep)):
             block += b(os.linesep)
         blocklines = [marker0] + block.splitlines(True) + [marker1]