I can't reproduce any issues with an lsan build, so we will remove
this for now and keep an eye out.

Bug: v8:6315
Change-Id: Iad2a1b23f3614ec9a09a83bb01e235969c3f9fcc
Reviewed-on: https://chromium-review.googlesource.com/542835Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46096}