pytorch

10583732 - Revert D17514653: [quant] Un-hardcode epsilon constant in FoldConvBatchNorm2d.

Revert D17514653: [quant] Un-hardcode epsilon constant in FoldConvBatchNorm2d. Test Plan: revert-hammer Differential Revision: D17514653 Original commit changeset: 7d9cc8f619b7 fbshipit-source-id: 2cf32082a46fe169a1db4926df78a9f3256616ad