Remove Chromium-specific cases from FeatureList.pm
https://bugs.webkit.org/show_bug.cgi?id=115169

Patch by Seokju Kwon <seokju.kwon@gmail.com> on 2013-04-25
Reviewed by Andreas Kling.

* Scripts/webkitperl/FeatureList.pm:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@149103 268f45cc-cd09-0410-ab3c-d52691b4dbfc