[BE] remove _SUPPORTED_OPTIM_MAP from tests (#63383)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/63383
Per title
ghstack-source-id: 135966157
Test Plan: CI
Reviewed By: SciPioneer
Differential Revision: D30358921
fbshipit-source-id: 965e054e525194b1ee55980340df275bab355c9b
