Remove Chromium scripts
https://bugs.webkit.org/show_bug.cgi?id=114492

Reviewed by Benjamin Poulain.

* Scripts/run-chromium-webkit-unit-tests: Removed.
* Scripts/update-webkit-chromium: Removed.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@148266 268f45cc-cd09-0410-ab3c-d52691b4dbfc