ALSA: emu10k1 - Remove CLFE-related controls for SB Live! Platinum CT4760P

SB Live! Platinum CT4760P is just a 4 channels sound card with STAC9721 and
Philips UDA1334 DAC.

Signed-off-by: Raymond Yau <superquad.vortex2@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/emu10k1/emumixer.c

@@ -1913,6 +1913,12 @@ int __devinit snd_emu10k1_mixer(struct snd_emu10k1 *emu,
 	for (; *c; c += 2)
 		rename_ctl(card, c[0], c[1]);
 
+	if (emu->card_capabilities->subsystem == 0x80401102) { /* SB Live! Platinum CT4760P */
+		remove_ctl(card, "Center Playback Volume");
+		remove_ctl(card, "LFE Playback Volume");
+		remove_ctl(card, "Wave Center Playback Volume");
+		remove_ctl(card, "Wave LFE Playback Volume");
+	}
 	if (emu->card_capabilities->subsystem == 0x20071102) {  /* Audigy 4 Pro */
 		rename_ctl(card, "Line2 Capture Volume", "Line1/Mic Capture Volume");
 		rename_ctl(card, "Analog Mix Capture Volume", "Line2 Capture Volume");