Fix lint error.

mfjarvis · mfjarvis · commit e783becc2501 · 2025-10-09T15:59:12.000+01:00
diff --git a/backend/src/models/utils/validation_utils.py b/backend/src/models/utils/validation_utils.py
@@ -1,7 +1,6 @@
 """Utils for backend folder"""
 
 import json
-from typing import Union
 
 from clients import redis_client
 from constants import Urls
