Remove vestiges of Chromium bits from watchlists.
https://bugs.webkit.org/show_bug.cgi?id=114047

Reviewed by Ryosuke Niwa.

* Scripts/webkitpy/common/config/watchlist: Removed vestiges.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@147767 268f45cc-cd09-0410-ab3c-d52691b4dbfc