Merge pull request #888 from pre-commit/887_xfail_windows_node_again

xfail windows node until #887 is resolved

testing/util.py

@@ -48,6 +48,7 @@ xfailif_windows_no_ruby = pytest.mark.xfail(
 def broken_deep_listdir():  # pragma: no cover (platform specific)
     if sys.platform != 'win32':
         return False
+    return True  # TODO: remove this after #887 is resolved
     try:
         os.listdir(str('\\\\?\\') + os.path.abspath(str('.')))
     except OSError: