Revert "[Dynamo] Fix inspect.getattr_static doesn't work well for torch.utils._cxx_pytree.PyTreeSpec (#120812)"
This reverts commit 1104e0798c8206e0226f2d68f6bb065645e6276f.
Reverted https://github.com/pytorch/pytorch/pull/120812 on behalf of https://github.com/huydhn due to Sorry for reverting your change but the XLA failure test_simple_model look legit https://hud.pytorch.org/pytorch/pytorch/commit/1104e0798c8206e0226f2d68f6bb065645e6276f ([comment](https://github.com/pytorch/pytorch/pull/120812#issuecomment-1972460001))
