fix for tests

Author: bodintsov

osf/management/commands/populate_notification_types.py

@@ -22,6 +22,7 @@ def populate_notification_types(*args, **kwargs):
         notification_types = yaml.safe_load(stream)
     for notification_type in notification_types['notification_types']:
         notification_type.pop('__docs__', None)
+        notification_type.pop('tests', None)
         object_content_type_model_name = notification_type.pop('object_content_type_model_name')
 
         if object_content_type_model_name == 'desk':