ALSA: core: Drop snd_device_initialize()

Now all users of snd_device_intialize() are gone, let's drop it.
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Curtis Malainey <cujomalainey@chromium.org>
Tested-by: Curtis Malainey <cujomalainey@chromium.org>
Link: https://lore.kernel.org/r/20230816160252.23396-10-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

include/sound/core.h

@@ -240,7 +240,6 @@ extern struct dentry *sound_debugfs_root;
 void snd_request_card(int card);
 
 int snd_device_alloc(struct device **dev_p, struct snd_card *card);
-void snd_device_initialize(struct device *dev, struct snd_card *card);
 
 int snd_register_device(int type, struct snd_card *card, int dev,
 			const struct file_operations *f_ops,

sound/core/init.c

@@ -111,29 +111,6 @@ static int get_slot_from_bitmask(int mask, int (*check)(struct module *, int),
 	return mask; /* unchanged */
 }
 
-/* the default release callback set in snd_device_initialize() below;
- * this is just NOP for now, as almost all jobs are already done in
- * dev_free callback of snd_device chain instead.
- */
-static void default_release(struct device *dev)
-{
-}
-
-/**
- * snd_device_initialize - Initialize struct device for sound devices
- * @dev: device to initialize
- * @card: card to assign, optional
- */
-void snd_device_initialize(struct device *dev, struct snd_card *card)
-{
-	device_initialize(dev);
-	if (card)
-		dev->parent = &card->card_dev;
-	dev->class = &sound_class;
-	dev->release = default_release;
-}
-EXPORT_SYMBOL_GPL(snd_device_initialize);
-
 /* the default release callback set in snd_device_alloc() */
 static void default_release_alloc(struct device *dev)
 {