fix: remove redundant pathlib import in _should_skip_file (PR #1232)

Author: karthiknadig

analysis/git_analysis.py

@@ -220,8 +220,6 @@ def _should_skip_file(filepath: str) -> bool:
         return True
 
     # Check filename-based test patterns
-    import pathlib
-
     path = pathlib.Path(filepath)
     filename = path.name