pytorch

2d75703c - Remove req to call step() in training loop (#63164)

Remove req to call step() in training loop (#63164) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/63164 Test Plan: Imported from OSS Reviewed By: mrshenli Differential Revision: D30284616 Pulled By: andwgu fbshipit-source-id: afdb677fb08851b139178a9f6d782196f26773e1