Revert "feat: Add an experimental custom attr for automatic Celery task code owner (#33180)" (#33272)

This reverts commit a1d840fd09.

lms/celery.py

@@ -7,10 +7,6 @@ Taken from: https://celery.readthedocs.org/en/latest/django/first-steps-with-dja
 
 import os
 
-from celery.signals import task_prerun
-from django.dispatch import receiver
-from edx_django_utils.monitoring import set_custom_attribute
-
 # Patch the xml libs before anything else.
 from openedx.core.lib.safe_lxml import defuse_xml_libs
 
@@ -21,20 +17,3 @@ defuse_xml_libs()
 # and then instantiate the Celery singleton.
 os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'lms.envs.production')
 from openedx.core.lib.celery import APP  # pylint: disable=wrong-import-position,unused-import
-
-
-@receiver(task_prerun)
-def set_code_owner_on_celery_tasks(*, task, **kwargs):
-    """
-    Sets the `code_owner` custom attribute on all Celery tasks, obviating the
-    need for the set_code_owner_attribute task decorator.
-
-    ...or rather, we're not yet sure whether this works, so we're setting a
-    different custom attribute first.
-
-    See https://github.com/openedx/edx-platform/issues/33179 for details.
-    """
-    try:
-        set_custom_attribute("auto_celery_code_owner_module", task.__module__)
-    except Exception as e:  # pylint: disable=broad-except
-        set_custom_attribute("auto_celery_code_owner_error", repr(e))