Merge pull request #4376 from rooftopcellist/rm_label_3.7.1

Fix 500 on Label Removal for WFJT's [3.7.1]

awx/main/access.py

@@ -495,7 +495,7 @@ class NotificationAttachMixin(BaseAccess):
             # due to this special case, we use symmetrical logic with attach permission
             return self._can_attach(notification_template=sub_obj, resource_obj=obj)
         return super(NotificationAttachMixin, self).can_unattach(
-            obj, sub_obj, relationship, relationship, data=data
+            obj, sub_obj, relationship, data=data
         )