Rely on python3.13 Generator defaults

Author: ap--

Lib/pathlib/types.py

@@ -305,7 +305,7 @@ def walk(
         top_down: bool = True,
         on_error: Optional[Callable[[Exception], None]] = None,
         follow_symlinks: bool = False,
-    ) -> Generator[tuple[Self, list[str], list[str]], None, None]:
+    ) -> Generator[tuple[Self, list[str], list[str]]]:
         """Walk the directory tree from this directory, similar to os.walk()."""
         paths = [self]
         while paths: