ASoC: wm9712: Remove unused DAI ID defines

The DAI ID defines are back from the time when DAIs were referenced by a
numerical ID. These days a string is used for matching instead and the
defines are unused. The last user of these defines was removed in commit
f0fba2ad1b ("ASoC: multi-component - ASoC Multi-Component Support"). So
remove the defines as well.

This also means the wm9712.h file no longer has any content and can be
removed.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wm9712.c

@@ -22,7 +22,6 @@
 #include <sound/initval.h>
 #include <sound/soc.h>
 #include <sound/tlv.h>
-#include "wm9712.h"
 
 #define WM9712_VENDOR_ID 0x574d4c12
 #define WM9712_VENDOR_ID_MASK 0xffffffff

sound/soc/codecs/wm9712.h

@@ -1,11 +0,0 @@
-/*
- * wm9712.h  --  WM9712 Soc Audio driver
- */
-
-#ifndef _WM9712_H
-#define _WM9712_H
-
-#define WM9712_DAI_AC97_HIFI	0
-#define WM9712_DAI_AC97_AUX		1
-
-#endif