ASoC: es8316: remove unused constant variables

Fix warnings with W=1

If these variables are useful this driver should be modified to expose
them.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/es8316.c

@@ -167,8 +167,6 @@ static const char * const es8316_hpmux_texts[] = {
 	"lin-rin with Boost and PGA"
 };
 
-static const unsigned int es8316_hpmux_values[] = { 0, 1, 2, 3 };
-
 static SOC_ENUM_SINGLE_DECL(es8316_left_hpmux_enum, ES8316_HPMIX_SEL,
 	4, es8316_hpmux_texts);
 
@@ -199,8 +197,6 @@ static const char * const es8316_dacsrc_texts[] = {
 	"RDATA TO LDAC, LDATA TO RDAC",
 };
 
-static const unsigned int es8316_dacsrc_values[] = { 0, 1, 2, 3 };
-
 static SOC_ENUM_SINGLE_DECL(es8316_dacsrc_mux_enum, ES8316_DAC_SET1,
 	6, es8316_dacsrc_texts);