This reverts commit ccde4205.

Reason for revert: Investigating performance regressions

Original change's description:
> [TurboFan] Support BigIntMultiply
>
> Bug: v8:9407
> Change-Id: Iab0a4ca8dd5d83444d1addd6043a5c8e3a8577a7
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3773773
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
> Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#82140}

Bug: v8:9407
Change-Id: I21de9fd43df2e043b4019d2bad560329ef0971b4
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3807584
Owners-Override: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#82168}