It's not used anywhere else.

R=mslekova@chromium.org

Change-Id: I2859618faba4da7cc93d9fba881470fc2ae8a6cb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1613995Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61590}