ASoC: wm8994: remove wm1811_snd_controls and mixin_boost_tlv

Fix the following gcc warning:

sound/soc/codecs/wm8994.c:736:38: warning: ‘wm1811_snd_controls’ defined
but not used [-Wunused-const-variable=]
 static const struct snd_kcontrol_new wm1811_snd_controls[] = {
                                      ^~~~~~~~~~~~~~~~~~~
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Link: https://lore.kernel.org/r/20200407082932.41511-2-yanaijie@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wm8994.c

@@ -285,7 +285,6 @@ static const DECLARE_TLV_DB_SCALE(st_tlv, -3600, 300, 0);
 static const DECLARE_TLV_DB_SCALE(wm8994_3d_tlv, -1600, 183, 0);
 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
 static const DECLARE_TLV_DB_SCALE(ng_tlv, -10200, 600, 0);
-static const DECLARE_TLV_DB_SCALE(mixin_boost_tlv, 0, 900, 0);
 
 #define WM8994_DRC_SWITCH(xname, reg, shift) \
 	SOC_SINGLE_EXT(xname, reg, shift, 1, 0, \
@@ -733,13 +732,6 @@ SOC_SINGLE_TLV("AIF2DAC Noise Gate Threshold Volume",
 	       7, 1, ng_tlv),
 };
 
-static const struct snd_kcontrol_new wm1811_snd_controls[] = {
-SOC_SINGLE_TLV("MIXINL IN1LP Boost Volume", WM8994_INPUT_MIXER_1, 7, 1, 0,
-	       mixin_boost_tlv),
-SOC_SINGLE_TLV("MIXINL IN1RP Boost Volume", WM8994_INPUT_MIXER_1, 8, 1, 0,
-	       mixin_boost_tlv),
-};
-
 /* We run all mode setting through a function to enforce audio mode */
 static void wm1811_jackdet_set_mode(struct snd_soc_component *component, u16 mode)
 {