sound: oss: remove driver for SGI HAL2 audio device

With the restructering of the indy button handling the old OSS HAL2 driver
got broken.  Since there is a new ALSA driver for HAL2, the experimental
OSS driver is obsolete and will be removed by this patch.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

sound/oss/Kconfig

@@ -24,13 +24,6 @@ config SOUND_VWSND
 	  <file:Documentation/sound/oss/vwsnd> for more info on this driver's
 	  capabilities.
 
-config SOUND_HAL2
-	tristate "SGI HAL2 sound (EXPERIMENTAL)"
-	depends on SGI_IP22 && EXPERIMENTAL
-	help
-	  Say Y or M if you have an SGI Indy or Indigo2 system and want to be able to
-	  use its on-board A2 audio system.
-
 config SOUND_AU1550_AC97
 	tristate "Au1550/Au1200 AC97 Sound"
 	depends on SOC_AU1550 || SOC_AU1200