Avoid types.NoneType

types.NoneType was removed in Python 3.

None is a singleton in Python, so 'x is None' is equivalent to
'isinstance(x, NoneType)'.

lib/ansible/plugins/action/include_vars.py

@@ -19,8 +19,6 @@ __metaclass__ = type
 
 import os
 
-from types import NoneType
-
 from ansible.errors import AnsibleError
 from ansible.parsing import DataLoader
 from ansible.plugins.action import ActionBase