[ALSA] usb-audio - remove superfluous LIRC ioctls

USB generic driver
The ioctls for LIRC compatibility can be removed because the
infrastructure and detection stuff is better done in user space.
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>

sound/usb/usbmixer.c

@@ -39,19 +39,6 @@
 
 #include "usbaudio.h"
 
-#if 0
-#include <linux/lirc.h>
-#else
-/* only those symbols from lirc.h we actually need: */
-#include <linux/ioctl.h>
-#define LIRC_MODE2REC(x)	((x) << 16)
-#define LIRC_MODE_CODE		0x00000008
-#define LIRC_CAN_REC_CODE	LIRC_MODE2REC(LIRC_MODE_CODE)
-#define LIRC_GET_FEATURES	_IOR('i', 0x00000000, __u32)
-#define LIRC_GET_REC_MODE	_IOR('i', 0x00000002, __u32)
-#define LIRC_SET_REC_MODE	_IOW('i', 0x00000012, __u32)
-#endif
-
 /*
  */
 
@@ -1775,25 +1762,6 @@ static unsigned int snd_usb_sbrc_hwdep_poll(snd_hwdep_t *hw, struct file *file,
 	return mixer->rc_code ? POLLIN | POLLRDNORM : 0;
 }
 
-static int snd_usb_sbrc_hwdep_ioctl(snd_hwdep_t *hw, struct file *file,
-				    unsigned int cmd, unsigned long arg)
-{
-	u32 __user *argp = (u32 __user *)arg;
-	u32 mode;
-
-	switch (cmd) {
-	case LIRC_GET_FEATURES:
-		return put_user(LIRC_CAN_REC_CODE, argp);
-	case LIRC_GET_REC_MODE:
-		return put_user(LIRC_MODE_CODE, argp);
-	case LIRC_SET_REC_MODE:
-		if (get_user(mode, argp))
-			return -EFAULT;
-		return mode == LIRC_MODE_CODE ? 0 : -ENOSYS;
-	}
-	return -ENOTTY;
-}
-
 static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
 {
 	snd_hwdep_t *hwdep;
@@ -1824,7 +1792,6 @@ static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
 	hwdep->ops.open = snd_usb_sbrc_hwdep_open;
 	hwdep->ops.release = snd_usb_sbrc_hwdep_release;
 	hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
-	hwdep->ops.ioctl = snd_usb_sbrc_hwdep_ioctl; 
 
 	mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
 	if (!mixer->rc_urb)