* Revert "[RELAND] Add device-agnostic runtime Device/Stream C++ API (#138677)"
This reverts commit 734bb01460d59e661e9114e7aa17e04821e4b57a.
Reverted https://github.com/pytorch/pytorch/pull/138677 on behalf of https://github.com/huydhn due to Sorry for reverting your change but the new test is still very flaky on MacOS even when it does not segfault anymore ([comment](https://github.com/pytorch/pytorch/pull/133572#issuecomment-2537256522))
* Revert "[RELAND] Add UTs for accelerator device-agnostic runtime APIs (#133572)"
This reverts commit 209119424922b135fef39aba1f25da3b67f5879a.
Reverted https://github.com/pytorch/pytorch/pull/133572 on behalf of https://github.com/huydhn due to Sorry for reverting your change but the new test is still very flaky on MacOS even when it does not segfault anymore ([comment](https://github.com/pytorch/pytorch/pull/133572#issuecomment-2537256522))
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