This is a reland of 2dc505a4

Original change's description:
> [Intl] remove unused js
> 
> Bug: v8:8066
> Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
> Change-Id: I9d86577540cf227e038354d9661c60fcdc644b3f
> Reviewed-on: https://chromium-review.googlesource.com/1179467
> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> Commit-Queue: Frank Tang <ftang@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#55200}

Bug: v8:8066
Change-Id: Id1f63c2e9c855250a7af01c1e0877296c0320d20
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/1185762
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55415}