pytorch

95f1cb34 - Revert D20480546: adds quantized implementation of hard sigmoid

Revert D20480546: adds quantized implementation of hard sigmoid Test Plan: revert-hammer Differential Revision: D20480546 Original commit changeset: 9febcb44afd9 fbshipit-source-id: 4461b455e63448cf45237e23c988b492c3e0f1b0