pytorch

795af157 - Revert D33172665: [LTC] Upstream utils to extract BackendDevice from at::Tensor

Revert D33172665: [LTC] Upstream utils to extract BackendDevice from at::Tensor Test Plan: revert-hammer Differential Revision: D33172665 (https://github.com/pytorch/pytorch/commit/121d06799954b0c0ba24f084f2d78b1a81a4e4ec) Original commit changeset: b334ee358ea7 Original Phabricator Diff: D33172665 (https://github.com/pytorch/pytorch/commit/121d06799954b0c0ba24f084f2d78b1a81a4e4ec) fbshipit-source-id: 8bff43cddfc5d30483ec5cea8eff037aab9d1cfa