Since https://chromium-review.googlesource.com/c/v8/v8/+/1791632 sped it
up, there is no need to mark it as SLOW.

Bug: v8:7783
Change-Id: I24d1b2f1e56dff4c820d397288ab3ad7662ae06b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1800564Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63712}