ASoC: cs42l73: remove unused variables 'vsp_output_mux' and 'xsp_output_mux'

sound/soc/codecs/cs42l73.c:276:38: warning:
 vsp_output_mux defined but not used [-Wunused-const-variable=]
sound/soc/codecs/cs42l73.c:279:38: warning:
 xsp_output_mux defined but not used [-Wunused-const-variable=]

They are never used, so can be removed.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20190815085454.30384-1-yuehaibing@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/cs42l73.c

@@ -273,12 +273,6 @@ static SOC_ENUM_SINGLE_DECL(xsp_output_mux_enum,
 			    CS42L73_MIXERCTL, 4,
 			    cs42l73_spo_mixer_text);
 
-static const struct snd_kcontrol_new vsp_output_mux =
-	SOC_DAPM_ENUM("Route", vsp_output_mux_enum);
-
-static const struct snd_kcontrol_new xsp_output_mux =
-	SOC_DAPM_ENUM("Route", xsp_output_mux_enum);
-
 static const struct snd_kcontrol_new hp_amp_ctl =
 	SOC_DAPM_SINGLE("Switch", CS42L73_PWRCTL3, 0, 1, 1);