ALSA: hda/sigmatel - remove unused variable 'stac9200_core_init'

sound/pci/hda/patch_sigmatel.c:981:30: warning:
 stac9200_core_init defined but not used [-Wunused-const-variable=]

It is never used, so can be removed.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_sigmatel.c

@@ -975,15 +975,6 @@ static int stac_create_spdif_mux_ctls(struct hda_codec *codec)
 	return 0;
 }
 
-/*
- */
-
-static const struct hda_verb stac9200_core_init[] = {
-	/* set dac0mux for dac converter */
-	{ 0x07, AC_VERB_SET_CONNECT_SEL, 0x00},
-	{}
-};
-
 static const struct hda_verb stac9200_eapd_init[] = {
 	/* set dac0mux for dac converter */
 	{0x07, AC_VERB_SET_CONNECT_SEL, 0x00},