Remove the 'brillo' wrapper.

This command no longer makes sense here, it should only be used from the chromite bootstrap workflow.

This is basically a revert of cl:896393003

BUG=None

Review URL: https://codereview.chromium.org/1138363002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@295415 0039d316-1c4b-4281-b951-d872f2087c98

brillo

-support/chromite_wrapper
\ No newline at end of file