Remove the launcher from the list of app to test.

The launcher is very often killed by the platform and prevents this test
to pass.

TBR=bulach@chromium.org

Review URL: https://codereview.chromium.org/29003002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229765 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 229765