Deleting quality dashboard code.

This code has served its purpose and can now be deleted. The dashboard
was mostly defunct, so I've turned it off in AppEngine.

R=kjellander@webrtc.org
BUG=None

Review URL: https://webrtc-codereview.appspot.com/33599004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7868 4adac7df-926f-26a2-2b94-8c16560cd09d