убрал лишнее

cron.py

@@ -8,11 +8,9 @@ import django
 if __name__ == "__main__":
     os.environ.setdefault("DJANGO_SETTINGS_MODULE", "djing.settings")
     django.setup()
-    from abonapp.models import Abon, AbonTariff
+    from abonapp.models import Abon
 
     users = Abon.objects.all()
 
     for usr in users:
         usr.activate_next_tariff()
-
-        AbonTariff.objects.update_priorities(usr)