CHROMIUM: drm/exynos: remove KDS sync

We haven't been using it for a while since it was replaced with implicit
fence based sync and we will never use it again.

BUG=598126
TEST=build and install kernel 3.8, run webgl aquarium

Change-Id: Id627b3b6ae8f2718911da091bb08034dccbdef48
Signed-off-by: Dominik Behr <dbehr@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/384633
Reviewed-by: Haixia Shi <hshi@chromium.org>
7 files changed