Also removed an obsolete test that is covered by test262/intl402

Bug: v8:7954, v8:5751

Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: I41113653cd27c165e6f0a52e4b63bb9ddc553cba
Reviewed-on: https://chromium-review.googlesource.com/1150453
Commit-Queue: Jungshik Shin <jshin@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Jungshik Shin <jshin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54757}