pytorch

a7f86553 - Revert D20624571: [pytorch][PR] [TensorExpr] Extend arithmetic simplifier to work with multi variable expressions

Revert D20624571: [pytorch][PR] [TensorExpr] Extend arithmetic simplifier to work with multi variable expressions Test Plan: revert-hammer Differential Revision: D20624571 Original commit changeset: e49049377bee fbshipit-source-id: 7d8dda0c3b44be1c3236a0313bbfa128b7015de7