[ALSA] Remove superfluous code

USB USX2Y
Removed the superfluous creation/deletion of lowlevel component.
It's not used at all.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/usb/usx2y/usbusx2yaudio.c

@@ -1006,35 +1006,15 @@ static int usX2Y_audio_stream_new(snd_card_t *card, int playback_endpoint, int c
 	return 0;
 }
 
-/*
- * free the chip instance
- *
- * here we have to do not much, since pcm and controls are already freed
- *
- */
-static int snd_usX2Y_device_dev_free(snd_device_t *device)
-{
-	return 0;
-}
-
-
 /*
  * create a chip instance and set its names.
  */
 int usX2Y_audio_create(snd_card_t* card)
 {
 	int err = 0;
-	static snd_device_ops_t ops = {
-		.dev_free = snd_usX2Y_device_dev_free,
-	};
 	
 	INIT_LIST_HEAD(&usX2Y(card)->chip.pcm_list);
 
-	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, usX2Y(card), &ops)) < 0) {
-//		snd_usX2Y_audio_free(usX2Y(card));
-		return err;
-	}
-
 	if (0 > (err = usX2Y_audio_stream_new(card, 0xA, 0x8)))
 		return err;
 	if (usX2Y(card)->chip.dev->descriptor.idProduct == USB_ID_US428)