ALSA: hda - remove unused clear of STATESTS

Although the code was updated last year the "#if 0" surrounding it
dates back to the original git commit.  The function will be moved to
a new file, no need to carry the dead code.
Signed-off-by: NDylan Reid <dgreid@chromium.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_intel.c

@@ -1081,11 +1081,6 @@ static irqreturn_t azx_interrupt(int irq, void *dev_id)
 		azx_writeb(chip, RIRBSTS, RIRB_INT_MASK);
 	}
 
-#if 0
-	/* clear state status int */
-	if (azx_readw(chip, STATESTS) & 0x04)
-		azx_writew(chip, STATESTS, 0x04);
-#endif
 	spin_unlock(&chip->reg_lock);
 	
 	return IRQ_HANDLED;