pytorch

b87c7ab6 - Remove redundant `found_inf` recompute from `_step_supports_amp_unscaling` path (#98620)

Remove redundant `found_inf` recompute from `_step_supports_amp_unscaling` path (#98620) following https://github.com/pytorch/pytorch/pull/97415#issuecomment-1499787115. Rel: https://github.com/pytorch/pytorch/pull/98613 Pull Request resolved: https://github.com/pytorch/pytorch/pull/98620 Approved by: https://github.com/janeyx99