Those mock files were used by QEMU-based test. Now that we moved to
hardware test, we can remove them.
BUG=chrome-os-partner:18598
TEST=Run on Spring
BRANCH=None
Change-Id: I1600b39132c598a07d3d6439fd837c0d78ea8820
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/47968