pytorch

2fce7483 - Back out "[shard] make ShardedTensor a torch.Tensor subclass" (#78796)

Back out "[shard] make ShardedTensor a torch.Tensor subclass" (#78796) Summary: Original commit changeset: f3ce270bad56 Original Phabricator Diff: D36569064 Test Plan: wait for sandcastle and doing additional checks Reviewed By: guangyuwang Differential Revision: D36890625 Pull Request resolved: https://github.com/pytorch/pytorch/pull/78796 Approved by: https://github.com/pbelevich