pytorch

a21cf765 - Revert D15459166: [pytorch][PR] add batch of string ops

Revert D15459166: [pytorch][PR] add batch of string ops Differential Revision: D15459166 Original commit changeset: 0ed908022475 fbshipit-source-id: d0a04228605e3437a02961a525eed8f8b3b59c17