This reverts commit 62a8bdca.

Reason for revert: Test times out on atom

Original change's description:
> [js-perf-test] Add more WeakMap perf tests
> 
> Change-Id: I46eb94e58fc4da55cb1b2adb9ffdbb09e5e33a5d
> Bug: v8:8557
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530800
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#60326}

TBR=ulan@chromium.org,jarin@chromium.org,sigurds@chromium.org

Change-Id: I88ae85bea2ad04db11137a602bd3d8ee6978fa04
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:8557
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1532061Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60353}