chore(tests): drop unused 'from pathlib import Path' import

Flagged by github-code-quality bot on PR #55. The import was left over
from an earlier draft; nothing in the file references Path.

Author: KylinMountain

tests/test_url_ingest.py

@@ -2,7 +2,6 @@
 from __future__ import annotations
 
 import io
-from pathlib import Path
 from unittest.mock import MagicMock, patch
 
 from openkb.url_ingest import (