pytorch

b6cb2caa - Revert "Fixed einsum compatibility/performance issues (#46398)" (#47821)

Revert "Fixed einsum compatibility/performance issues (#46398)" (#47821) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/47821 This reverts commit a5c65b86ce249f5f2d365169e6315593fbd47b61. Conflicts: test/test_linalg.py Test Plan: Imported from OSS Reviewed By: mruberry Differential Revision: D24909923 Pulled By: gchanan fbshipit-source-id: 9dcf98e7c4a3c7e5aaffe475867fa086f3bb6ff2