Remove more tests from fast/js now that they've moved to the v8 repo.

R=adamk@chromium.org
BUG=237872

Review URL: https://chromiumcodereview.appspot.com/21145003

git-svn-id: svn://svn.chromium.org/blink/trunk@155129 bbb929c8-8fbe-4397-9dbb-9b2b20218538