staging: bcm2835-audio: remove unused macro

The VC_AUDIO_MAX_MSG_LEN macro is not used by anything in the
bcm2835-audio driver.
Signed-off-by: Hendrik v. Raven <hendrik@consetetur.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/bcm2835-audio/vc_vchi_audioserv_defs.h

@@ -21,9 +21,6 @@
 /* FourCC code used for VCHI connection */
 #define VC_AUDIO_SERVER_NAME  MAKE_FOURCC("AUDS")
 
-/* Maximum message length */
-#define VC_AUDIO_MAX_MSG_LEN  (sizeof(VC_AUDIO_MSG_T))
-
 /*
  *  List of screens that are currently supported
  *  All message types supported for HOST->VC direction