This reverts commit 40b062ce.

Reason for revert: Failing Fuzz tests on arm - https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux%20-%20arm%20-%20sim%20-%20debug/27306/overview

Original change's description:
> [future] Use mid-tier regalloc for huge functions
>
> Stage the --turbo-use-mid-tier-regalloc-for-huge-functions behind
> --future.
>
> R=​thibaudm@chromium.org
>
> Bug: v8:12287, v8:12320
> Change-Id: I7145ca1b022bfdcb0b61d6666daf855f14cbc4ce
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3236547
> Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
> Commit-Queue: Clemens Backes <clemensb@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#77549}

Bug: v8:12287, v8:12320
Change-Id: Id86e9c0d44e6a273abdeb384f722ff308c56e70f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3245342
Auto-Submit: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77553}