Revert "FIX make sure we import the correct object from multiprocessing (#53282)"
This reverts commit e103d6af3dadb62348eedc2b6c68410f5441d542.
Reverted https://github.com/pytorch/pytorch/pull/53282 on behalf of https://github.com/janeyx99 due to Sorry, reverting as this breaks 10.2 tests on trunk https://hud.pytorch.org/pytorch/pytorch/commit/e103d6af3dadb62348eedc2b6c68410f5441d542
