Move uses of to_bytes, to_text, to_native to use the module_utils version (#17423)

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.

lib/ansible/plugins/cache/jsonfile.py

@@ -31,9 +31,9 @@ except ImportError:
 
 from ansible import constants as C
 from ansible.errors import AnsibleError
+from ansible.module_utils._text import to_bytes
 from ansible.parsing.utils.jsonify import jsonify
 from ansible.plugins.cache.base import BaseCacheModule
-from ansible.utils.unicode import to_bytes
 
 try:
     from __main__ import display