remove remnants of properties hack (#31018)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/31018
Properties are now disallowed so this hack is no longer necessary
Test Plan: Imported from OSS
Differential Revision: D18904112
Pulled By: suo
fbshipit-source-id: 83448da677082d59355729bb72d9f9f4c31ea756
