[ALSA] sound/core/: possible cleanups

PCM Midlevel,ALSA Core,Timer Midlevel,ALSA sequencer,Virtual Midi
This patch contains the following possible cleanups:
- make needlessly global code static
- #if 0 the following unused global functions
- remove the following unneeded EXPORT_SYMBOL's

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/core/seq/seq_virmidi.c b/sound/core/seq/seq_virmidi.c
index 58c56a1..a66484b5 100644
--- a/sound/core/seq/seq_virmidi.c
+++ b/sound/core/seq/seq_virmidi.c
@@ -110,7 +110,7 @@
  * handler of a remote port which is attached to the virmidi via
  * SNDRV_VIRMIDI_SEQ_ATTACH.
  */
-/* exported */
+#if 0
 int snd_virmidi_receive(snd_rawmidi_t *rmidi, snd_seq_event_t *ev)
 {
 	snd_virmidi_dev_t *rdev;
@@ -118,6 +118,7 @@
 	rdev = rmidi->private_data;
 	return snd_virmidi_dev_receive_event(rdev, ev);
 }
+#endif  /*  0  */
 
 /*
  * event handler of virmidi port
@@ -548,4 +549,3 @@
 module_exit(alsa_virmidi_exit)
 
 EXPORT_SYMBOL(snd_virmidi_new);
-EXPORT_SYMBOL(snd_virmidi_receive);