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/executor/process/worker.py

@@ -19,16 +19,10 @@
 from __future__ import (absolute_import, division, print_function)
 __metaclass__ = type
 
-from ansible.compat.six.moves import queue
-
-import json
 import multiprocessing
 import os
-import signal
 import sys
-import time
 import traceback
-import zlib
 
 from jinja2.exceptions import TemplateNotFound
 
@@ -40,13 +34,10 @@ try:
 except ImportError:
     HAS_ATFORK=False
 
-from ansible.errors import AnsibleError, AnsibleConnectionFailure
+from ansible.errors import AnsibleConnectionFailure
 from ansible.executor.task_executor import TaskExecutor
 from ansible.executor.task_result import TaskResult
-from ansible.playbook.handler import Handler
-from ansible.playbook.task import Task
-from ansible.vars.unsafe_proxy import AnsibleJSONUnsafeDecoder
-from ansible.utils.unicode import to_unicode
+from ansible.module_utils._text import to_text
 
 try:
     from __main__ import display
@@ -144,11 +135,11 @@ class WorkerProcess(multiprocessing.Process):
                 try:
                     self._host.vars = dict()
                     self._host.groups = []
-                    task_result = TaskResult(self._host.name, self._task._uuid, dict(failed=True, exception=to_unicode(traceback.format_exc()), stdout=''))
+                    task_result = TaskResult(self._host.name, self._task._uuid, dict(failed=True, exception=to_text(traceback.format_exc()), stdout=''))
                     self._rslt_q.put(task_result, block=False)
                 except:
-                    display.debug(u"WORKER EXCEPTION: %s" % to_unicode(e))
-                    display.debug(u"WORKER TRACEBACK: %s" % to_unicode(traceback.format_exc()))
+                    display.debug(u"WORKER EXCEPTION: %s" % to_text(e))
+                    display.debug(u"WORKER TRACEBACK: %s" % to_text(traceback.format_exc()))
 
         display.debug("WORKER PROCESS EXITING")