Fix ruff errors

Author: tomschr

tests/cli/cmd_validate/test_process.py

@@ -1,7 +1,6 @@
 """Tests for the XML validation process module."""
 
 from pathlib import Path
-import re
 from subprocess import CompletedProcess
 from unittest.mock import AsyncMock, MagicMock, patch
 

tests/cli/cmd_validate/validate/test_cmd_validate.py

@@ -3,7 +3,6 @@
 from collections.abc import Iterator
 from os import PathLike
 from pathlib import Path
-import re
 from subprocess import CompletedProcess
 import tempfile
 from unittest.mock import AsyncMock, Mock, patch