ALSA: line6: Move the contents of usbdefs.h into driver.h

Most of them are rather relevant with the definitions in driver.h,
and there are only a few lines, so just rip it off.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/usb/line6/variax.c

@@ -17,7 +17,6 @@
 #include <sound/core.h>
 
 #include "driver.h"
-#include "usbdefs.h"
 
 #define VARIAX_STARTUP_DELAY1 1000
 #define VARIAX_STARTUP_DELAY3 100