Revert "Linux: enable ChromeMainTest.AppLaunch."
Revert "Linux: enable ChromeMainTest.AppLaunch."

Still fails on the builders but not locally.

git-svn-id: http://src.chromium.org/svn/trunk/src@42550 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 0342f1223cffba7c5b66e164008d0ac13da8f8b9
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser