meta-samsung: drop unneeded alsa-ucm-conf-tuna

Signed-off-by: Simon Busch <morphis@gravedo.de>
meta-android: android-system: disable media service

We're going to use plain alsa and gstreamer for media playback so no need for the android
part anymore.

Signed-off-by: Simon Busch <morphis@gravedo.de>