Remove cashew from autotest tests.

BUG=chromium-os:31188
TEST=Remote trybots for alex-paladin, amd64-generic-paladin
x86-generic-paladin, amd64-generic-full, arm-generic-full,
x86-generic-full, x86-alex-release

Change-Id: Ie9fd81e4bfb2b5b1bdd93dc2b2dc3cce62ada0c4
Reviewed-on: https://gerrit.chromium.org/gerrit/23388
Reviewed-by: Jim Hebert <jimhebert@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Reviewed-by: mukesh agrawal <quiche@chromium.org>
Tested-by: Thieu Le <thieule@chromium.org>
Commit-Ready: Thieu Le <thieule@chromium.org>
8 files changed