pytorch

41991710 - Revert "[PyTorch] Use c10::FastMap for memoizing in Pickler (#96360)" (#96547)

Revert "[PyTorch] Use c10::FastMap for memoizing in Pickler (#96360)" (#96547) This reverts commit 69d3fa2e4d93f3367ceb3af62d78aedd317dca6c. Reason: breaks internal meta tests. See [D43926671](https://www.internalfb.com/diff/D43926671) Pull Request resolved: https://github.com/pytorch/pytorch/pull/96547 Approved by: https://github.com/seemethere, https://github.com/malfet