Document empty_strided (#23735)
Summary:
Changelog:
- Add doc string for torch.empty_strided
- Remove empty file named `python` in test/
Fixes https://github.com/pytorch/pytorch/issues/23688
Pull Request resolved: https://github.com/pytorch/pytorch/pull/23735
Differential Revision: D16623438
Pulled By: ailzhang
fbshipit-source-id: acd5a47da9220243467ccc6bff92edd209cca709
