pythonPackages.pathpy: skip performance test (#52548)

The test may fail non-deterministically, as it does right now on hydra.

pkgs/development/python-modules/path.py/default.nix

@@ -39,6 +39,7 @@ buildPythonPackage rec {
   checkPhase = ''
     # Ignore pytest configuration
     rm pytest.ini
-    py.test test_path.py
+    # ignore performance test which may fail when the system is under load
+    py.test -v -k 'not TestPerformance' test_path.py
   '';
 }