fix: remove unused imports in test_batch_migration (#563)

Remove unused Path, MagicMock, and patch imports.

Author: nkanu17

tests/unit/test_batch_migration.py

@@ -10,9 +10,8 @@
 """
 
 from fnmatch import fnmatch
-from pathlib import Path
 from typing import Any, Dict, List
-from unittest.mock import MagicMock, Mock, patch
+from unittest.mock import Mock
 
 import pytest
 import yaml