ALSA: hda - Remove AZX_DCAPS_POSFIX_COMBO

It turned out that the COMBO position fix mode is rather more harmful,
and it got reverted (with the replacement of runtime->delay
calculation) recently.  Hence we can get rid of AZX_DCAPS_POSFIX_COMBO
as well.

It's still possible to pass this mode via position_fix module option,
in case where this really helps on weird machines (who knows).
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_intel.c

@@ -554,7 +554,6 @@ enum {
 #define AZX_DCAPS_BUFSIZE	(1 << 21)	/* no buffer size alignment */
 #define AZX_DCAPS_ALIGN_BUFSIZE	(1 << 22)	/* buffer size alignment */
 #define AZX_DCAPS_4K_BDLE_BOUNDARY (1 << 23)	/* BDLE in 4k boundary */
-#define AZX_DCAPS_POSFIX_COMBO  (1 << 24)	/* Use COMBO as default */
 #define AZX_DCAPS_COUNT_LPIB_DELAY  (1 << 25)	/* Take LPIB as delay */
 
 /* quirks for ATI SB / AMD Hudson */
@@ -2858,10 +2857,6 @@ static int __devinit check_position_fix(struct azx *chip, int fix)
 		snd_printd(SFX "Using LPIB position fix\n");
 		return POS_FIX_LPIB;
 	}
-	if (chip->driver_caps & AZX_DCAPS_POSFIX_COMBO) {
-		snd_printd(SFX "Using COMBO position fix\n");
-		return POS_FIX_COMBO;
-	}
 	return POS_FIX_AUTO;
 }