ALSA: ac97: Remove redundant driver match function

If there is no driver match function, the driver core assumes that each
candidate pair (driver, device) matches, see driver_match_device()

Drop the bus's match function that always returned 1 and so
implements the same behaviour as when there is no match function.
Signed-off-by: Lizhe <sensor1010@163.com>
Link: https://lore.kernel.org/r/20230319044733.327091-1-sensor1010@163.comSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/ac97_bus.c

@@ -75,19 +75,8 @@ int snd_ac97_reset(struct snd_ac97 *ac97, bool try_warm, unsigned int id,
 }
 EXPORT_SYMBOL_GPL(snd_ac97_reset);
 
-/*
- * Let drivers decide whether they want to support given codec from their
- * probe method. Drivers have direct access to the struct snd_ac97
- * structure and may  decide based on the id field amongst other things.
- */
-static int ac97_bus_match(struct device *dev, struct device_driver *drv)
-{
-	return 1;
-}
-
 struct bus_type ac97_bus_type = {
 	.name		= "ac97",
-	.match		= ac97_bus_match,
 };
 
 static int __init ac97_bus_init(void)