This reverts commit 6879c515.

Reason for revert: Speculative revert for roll failures
https://ci.chromium.org/ui/p/chromium/builders/try/win_optional_gpu_tests_rel/80674/overview

Original change's description:
> [osr] Enable concurrent OSR
>
> Fixed: v8:12161
> Change-Id: Ie6e83dd4f261fff2d1fa8613116e83ef6b61561f
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3576116
> Auto-Submit: Jakob Linke <jgruber@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#79857}

Change-Id: I05bd9594e8ce3db71acb31cf4c626c066158ceaa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3579163
Owners-Override: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#79890}