output_control: removed audio_output_signal()

src/output_control.c

@@ -120,12 +120,6 @@ audio_output_update(struct audio_output *ao,
 }
 
 void
-audio_output_signal(struct audio_output *ao)
-{
-	notify_signal(&ao->notify);
-}
-
-void
 audio_output_play(struct audio_output *ao)
 {
 	if (!ao->open)

src/output_control.h

@@ -49,14 +49,6 @@ audio_output_update(struct audio_output *ao,
 		    const struct audio_format *audio_format,
 		    const struct music_pipe *mp);
 
-/**
- * Wakes up the audio output thread.  This is part of a workaround for
- * a deadlock bug, and should be removed as soon as the real cause is
- * fixed.  XXX
- */
-void
-audio_output_signal(struct audio_output *ao);
-
 void
 audio_output_play(struct audio_output *ao);