* Remove compat code for to_unicode, to_str and to_bytes
Code was marked as deprecated and to be removed after 2.4
* Remove is_encrypted and is_encrypted_file
Code was marked as deprecated after 2.4 release.
We couldn't copy to_unicode, to_bytes, to_str into module_utils because
of licensing. So once created it we had two sets of functions that did
the same things but had different implementations. To remedy that, this
change removes the ansible.utils.unicode versions of those functions.
You cannot call bytes(obj) to get a simple representation of obj on
Python 3! E.g. bytes(42) returns a byte string with 42 NUL characters
instead of b'42'.