staging: bcm2835-audio: remove unused semaphores

This patch removes unused semaphores alsa_stream->buffers_update_sem
and alsa_stream->control_sem from struct bcm2835_alsa_stream
Signed-off-by: Aishwarya Pant <aishpant@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c

@@ -156,8 +156,6 @@ static int snd_bcm2835_playback_open_generic(
 	alsa_stream->substream = substream;
 	alsa_stream->idx = idx;
 
-	sema_init(&alsa_stream->buffers_update_sem, 0);
-	sema_init(&alsa_stream->control_sem, 0);
 	spin_lock_init(&alsa_stream->lock);
 
 	err = bcm2835_audio_open(alsa_stream);

drivers/staging/vc04_services/bcm2835-audio/bcm2835.h

@@ -122,8 +122,6 @@ struct bcm2835_alsa_stream {
 	struct snd_pcm_substream *substream;
 	struct snd_pcm_indirect pcm_indirect;
 
-	struct semaphore buffers_update_sem;
-	struct semaphore control_sem;
 	spinlock_t lock;
 	volatile unsigned int control;
 	volatile unsigned int status;