libchromeos: Reenable vaapi HW encode acceleration.

Remove the kill switch now that we have proper autodetection.

BUG=chromium:402182
TEST=manual runs
CQ-DEPEND=CL:220120

Change-Id: Iffe554f243c96d8036789d4e6095edb00c2dc92c
Reviewed-on: https://chromium-review.googlesource.com/219915
Reviewed-by: Daniel Erat <derat@chromium.org>
Reviewed-by: Wu-Cheng Li <wuchengli@chromium.org>
Tested-by: Pawel Osciak <posciak@chromium.org>
Commit-Queue: Pawel Osciak <posciak@chromium.org>
1 file changed