Audio: remove separated bt_sco playback profile

Myabe this related to htc flounder hw but this
not needed for samsung and this cause bug when
hal trying open bt pcm device for system sounds
while voice call active on sco and bt pcm device
opened with start_voice_session_bt_sco.

Change-Id: I75482dad42feccae5e8ca9df2623ef4693a7bdb0

# Conflicts:
#	audio/audio_hw.c