ALSA: info: Drop kerneldoc comment from snd_info_create_entry()

It's no longer a part of API but merely a local function.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/core/info.c

@@ -686,7 +686,7 @@ const char *snd_info_get_str(char *dest, const char *src, int len)
 
 EXPORT_SYMBOL(snd_info_get_str);
 
-/**
+/*
  * snd_info_create_entry - create an info entry
  * @name: the proc file name
  * @parent: the parent directory