ALSA: ice1712: wm8766: Remove some unused functions

Removes some functions that are not used anywhere:
snd_wm8766_set_power() snd_wm8766_set_master_mode()

This was partially found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/ice1712/wm8766.c b/sound/pci/ice1712/wm8766.c
index 21b373b..f7ac8d5 100644
--- a/sound/pci/ice1712/wm8766.c
+++ b/sound/pci/ice1712/wm8766.c
@@ -183,22 +183,6 @@
 	snd_wm8766_write(wm, WM8766_REG_IFCTRL, val | dac);
 }
 
-void snd_wm8766_set_master_mode(struct snd_wm8766 *wm, u16 mode)
-{
-	u16 val = wm->regs[WM8766_REG_DACCTRL3] & ~WM8766_DAC3_MSTR_MASK;
-
-	mode &= WM8766_DAC3_MSTR_MASK;
-	snd_wm8766_write(wm, WM8766_REG_DACCTRL3, val | mode);
-}
-
-void snd_wm8766_set_power(struct snd_wm8766 *wm, u16 power)
-{
-	u16 val = wm->regs[WM8766_REG_DACCTRL3] & ~WM8766_DAC3_POWER_MASK;
-
-	power &= WM8766_DAC3_POWER_MASK;
-	snd_wm8766_write(wm, WM8766_REG_DACCTRL3, val | power);
-}
-
 void snd_wm8766_volume_restore(struct snd_wm8766 *wm)
 {
 	u16 val = wm->regs[WM8766_REG_DACR1];
diff --git a/sound/pci/ice1712/wm8766.h b/sound/pci/ice1712/wm8766.h
index c119f84..18c8d9d 100644
--- a/sound/pci/ice1712/wm8766.h
+++ b/sound/pci/ice1712/wm8766.h
@@ -155,8 +155,6 @@
 void snd_wm8766_init(struct snd_wm8766 *wm);
 void snd_wm8766_resume(struct snd_wm8766 *wm);
 void snd_wm8766_set_if(struct snd_wm8766 *wm, u16 dac);
-void snd_wm8766_set_master_mode(struct snd_wm8766 *wm, u16 mode);
-void snd_wm8766_set_power(struct snd_wm8766 *wm, u16 power);
 void snd_wm8766_volume_restore(struct snd_wm8766 *wm);
 int snd_wm8766_build_controls(struct snd_wm8766 *wm);