Discussing with Toon, we've decided that these flags are no longer needed.

Bug: v8:9714
Change-Id: Ic5ae8b4c0b2f470fad915ada8fec753a5d7e50ab
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1801844
Commit-Queue: Victor Gomes <victorgomes@google.com>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Auto-Submit: Victor Gomes <victorgomes@google.com>
Cr-Commit-Position: refs/heads/master@{#63765}