Merge pull request #23965 from edx/ihtram/reverse-migration-fix

added reverse_sql method attribute to avoid sql operation error YONK-1588

openedx/core/djangoapps/django_comment_common/migrations/0008_role_user_index.py

@@ -13,6 +13,5 @@ class Migration(migrations.Migration):
     operations = [
         migrations.RunSQL(
             'CREATE INDEX dcc_role_users_user_role_idx ON django_comment_client_role_users(user_id, role_id);',
-            reverse_sql=migrations.RunSQL.noop,
-        ),
+            reverse_sql='DROP INDEX dcc_role_users_user_role_idx ON django_comment_client_role_users;'),
     ]