sys-kernel/linux-headers: remove non-upstream V4L2 control

V4L2_CID_MPEG_VIDEO_H264_SPS_PPS_BEFORE_IDR is not used anymore and has
been replaced by the upstream V4L2_CID_MPEG_VIDEO_PREPEND_SPSPPS_TO_IDR,
and is not used anywhere in Chromium, so we can remove it.

BUG=b:167992324
TEST=emerge-kukui linux-header

Change-Id: I79d03dc47085c395b81123e6c4b5e6d521abfa5c
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2434171
Reviewed-by: Fritz Koenig <frkoenig@chromium.org>
Tested-by: Alexandre Courbot <acourbot@chromium.org>
Commit-Queue: Alexandre Courbot <acourbot@chromium.org>
3 files changed