pytorch

ab5edf21 - Revert D23789657: [wip] fast typeMeta/ScalarType conversion approach 2

Revert D23789657: [wip] fast typeMeta/ScalarType conversion approach 2 Test Plan: revert-hammer Differential Revision: D23789657 (https://github.com/pytorch/pytorch/commit/1ed1a2f5b004eb03257d35e2ff08030fac6c4f64) Original commit changeset: 5afdd52d24bd fbshipit-source-id: 6d827be8895bcb39c8e85342eee0f7a3f5056c76