Remove debug code that fails with predictable tests.

Bug: chromium:1130673
Change-Id: Ie0009a3b18979057b08c25d22c58c7542dd1db6a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2435678Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70167}