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/action/script.py

@@ -19,15 +19,14 @@ __metaclass__ = type
 
 import os
 
-from ansible.plugins.action import ActionBase
 from ansible.errors import AnsibleError
-from ansible.utils.unicode import to_str
+from ansible.module_utils._text import to_native
+from ansible.plugins.action import ActionBase
 
 
 class ActionModule(ActionBase):
     TRANSFERS_FILES = True
 
-
     def run(self, tmp=None, task_vars=None):
         ''' handler for file transfer operations '''
         if task_vars is None:
@@ -74,7 +73,7 @@ class ActionModule(ActionBase):
         try:
             source = self._loader.get_real_file(self._find_needle('files', source))
         except AnsibleError as e:
-            return dict(failed=True, msg=to_str(e))
+            return dict(failed=True, msg=to_native(e))
 
         # transfer the file to a remote tmp location
         tmp_src = self._connection._shell.join_path(tmp, os.path.basename(source))