Remove skeleton Audio and MIDI Host mode Class drivers -- will not implement in next release.

LUFA/Drivers/USB/Class/MIDI.h

@@ -34,7 +34,6 @@
  *  \section Sec_Dependencies Module Source Dependencies
  *  The following files must be built with any user project that uses this module:
  *    - LUFA/Drivers/USB/Class/Device/MIDI.c
- *    - LUFA/Drivers/USB/Class/Host/MIDI.c
  *
  *  \section Module Description
  *  MIDI Class Driver module. This module contains an internal implementation of the USB MIDI Class, for both Device
@@ -60,10 +59,6 @@
 			#include "Device/MIDI.h"
 		#endif
 		
-		#if defined(USB_CAN_BE_HOST)
-			#include "Host/MIDI.h"
-		#endif
-		
 #endif
 
 /** @} */