This isn't used outside of tests, so let's just remove it.

Change-Id: I06b7ec11911fd8ebc3bbabcba16d0c2a3fafddab
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2968413Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75220}