pytorch

0efc527d - Revert D15548138: Export feature length information for onnxifi operator

Revert D15548138: Export feature length information for onnxifi operator Differential Revision: D15548138 Original commit changeset: 460118648bb4 fbshipit-source-id: 1a25ca2942d804f6c88e96c436f09f68c260b9be