[learningequality#3921] Remove signature insurance on task result model

contentcuration/contentcuration/models.py

@@ -75,7 +75,6 @@
 from contentcuration.db.models.manager import CustomManager
 from contentcuration.statistics import record_channel_stats
 from contentcuration.utils.cache import delete_public_channel_cache_keys
-from contentcuration.utils.celery.tasks import generate_task_signature
 from contentcuration.utils.parser import load_json_string
 from contentcuration.viewsets.sync.constants import ALL_CHANGES
 from contentcuration.viewsets.sync.constants import ALL_TABLES
@@ -2451,7 +2450,6 @@ class TaskResultCustom(object):
     signature = models.CharField(null=True, blank=False, max_length=32)
 
     super_as_dict = TaskResult.as_dict
-    super_save = TaskResult.save
 
     def as_dict(self):
         """
@@ -2465,22 +2463,6 @@ def as_dict(self):
         )
         return super_dict
 
-    def set_signature(self):
-        """
-        Generates and sets the signature for the task if it isn't set
-        """
-        if self.signature is not None:
-            # nothing to do
-            return
-        self.signature = generate_task_signature(self.task_name, task_kwargs=self.task_kwargs, channel_id=self.channel_id)
-
-    def save(self, *args, **kwargs):
-        """
-        Override save to ensure signature is generated
-        """
-        self.set_signature()
-        return self.super_save(*args, **kwargs)
-
     @classmethod
     def contribute_to_class(cls, model_class=TaskResult):
         """