This reverts commit a1b863c1.

Reason for revert: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Clusterfuzz%20Linux%20ASAN%20no%20inline%20-%20release%20builder/8288/overview

Original change's description:
> [heap] Introduce per-thread storage for concurrent sweeping
>
> Introduce ConcurrentSweeper as indirection between SweeperJob and
> Sweeper to hold per-thread state during sweeping.
> This will be used by MinorMC sweeping to hold the pretenuring feedback
> map.
>
> Bug: v8:12612
> Change-Id: Ib363339f9109b405e4cae7f2c08cb4f0eacff8d0
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3829466
> Commit-Queue: Omer Katz <omerkatz@chromium.org>
> Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#82442}

Bug: v8:12612
Change-Id: I66865a807908a6ef296e06530f293dcf27fea1a3
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3829478
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Nico Hartmann <nicohartmann@chromium.org>
Auto-Submit: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82443}