Spurious numpy writable warning (#47271)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/47160
Pull Request resolved: https://github.com/pytorch/pytorch/pull/47271
Reviewed By: ailzhang
Differential Revision: D24855889
Pulled By: mruberry
fbshipit-source-id: beaf232b115872f20fb0292e995a876cdc429868
