Fix error: duplicated registration of actors_manager

celery/worker/__init__.py

@@ -91,7 +91,7 @@ class WorkController(configurated):
     send_events = from_config()
     pool_cls = from_config('pool')
     consumer_cls = from_config('consumer')
-    actors_manager_cls = from_config('actor_manager')
+    actors_manager_cls = from_config('actors_manager')
     mediator_cls = from_config('mediator')
     timer_cls = from_config('timer')
     timer_precision = from_config('timer_precision')
@@ -99,7 +99,6 @@ class WorkController(configurated):
     autoreloader_cls = from_config('autoreloader')
     schedule_filename = from_config()
     scheduler_cls = from_config('celerybeat_scheduler')
-    actors_manager_cls = from_config('actors_manager')
     task_time_limit = from_config()
     task_soft_time_limit = from_config()
     max_tasks_per_child = from_config()