Revert "reseed all Generators in Dataloader's _worker_loop() -- via GC (#107131)"
This reverts commit 42625da5e1c29d710abf6db01c2506898043fdb2.
Reverted https://github.com/pytorch/pytorch/pull/107131 on behalf of https://github.com/facebook-github-bot due to Diff reverted internally ([comment](https://github.com/pytorch/pytorch/pull/107131#issuecomment-1690325745))
