libchromeos: remove --enable-webrtc-hw-vp8-encoding flag.

--enable-webrtc-hw-vp8-encoding was removed completely from Chrome.

BUG=chromium:350197
TEST=Build the code and test apprtc loopback on nyan big.

Change-Id: Icb35bb4c23faf9d868a537fbf8402836c0c97f06
Reviewed-on: https://chromium-review.googlesource.com/252650
Reviewed-by: Justin Chuang <jchuang@chromium.org>
Reviewed-by: Pawel Osciak <posciak@chromium.org>
Reviewed-by: Wu-cheng Li <wuchengli@chromium.org>
Commit-Queue: Wu-cheng Li <wuchengli@chromium.org>
Trybot-Ready: Wu-cheng Li <wuchengli@chromium.org>
Tested-by: Wu-cheng Li <wuchengli@chromium.org>
1 file changed