Revert 279472 "Mojo: Add mojo_shell_tests to the Linux bots."
This is causing test failure:
http://build.chromium.org/p/chromium.linux/builders/Linux%20Tests/builds/11834/steps/mojo_shell_tests/logs/LaunchServiceInProcess
> Mojo: Add mojo_shell_tests to the Linux bots.
>
> (It seems to be passing on the, uh, Linux Trusty FYI bots, which should
> be close enough.)
>
> R=sky@chromium.org
>
> Review URL: https://codereview.chromium.org/
331993008
TBR=viettrungluu@chromium.org
Review URL: https://codereview.chromium.org/
353753003
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@279501 0039d316-1c4b-4281-b951-d872f2087c98