ALSA: sonicvibes: remove redundant pointer 'dir'

Pointer 'dir' is being assigned but is never used hence it is
redundant and can be removed.

Cleans up clang warning:
warning: variable 'dir' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/sonicvibes.c

@@ -1433,14 +1433,12 @@ static int snd_sonicvibes_midi(struct sonicvibes *sonic,
 {
 	struct snd_mpu401 * mpu = rmidi->private_data;
 	struct snd_card *card = sonic->card;
-	struct snd_rawmidi_str *dir;
 	unsigned int idx;
 	int err;
 
 	mpu->private_data = sonic;
 	mpu->open_input = snd_sonicvibes_midi_input_open;
 	mpu->close_input = snd_sonicvibes_midi_input_close;
-	dir = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
 	for (idx = 0; idx < ARRAY_SIZE(snd_sonicvibes_midi_controls); idx++)
 		if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_sonicvibes_midi_controls[idx], sonic))) < 0)
 			return err;