pytorch

7135f7c2 - Revert D17412856: [JIT] add type refinements for isinstance checks

Revert D17412856: [JIT] add type refinements for isinstance checks Test Plan: revert-hammer Differential Revision: D17412856 Original commit changeset: ded47eb086c4 fbshipit-source-id: 854a6c8f322435c3f3416dbedcb642cb2d2902b1