staging: line6: clean up line6_variax_process_message()

Previous versions of the line6 driver snooped MIDI traffic in order to
make device state accessible via sysfs attributes.  This involved a lot
of logic in line6_variax_process_message() that has since been removed.

Drop unused conditionals in line6_variax_process_message().
Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/line6/variax.c

@@ -133,13 +133,6 @@ void line6_variax_process_message(struct usb_line6_variax *variax)
 	const unsigned char *buf = variax->line6.buffer_message;
 
 	switch (buf[0]) {
-	case LINE6_PARAM_CHANGE | LINE6_CHANNEL_HOST:
-		break;
-
-	case LINE6_PROGRAM_CHANGE | LINE6_CHANNEL_DEVICE:
-	case LINE6_PROGRAM_CHANGE | LINE6_CHANNEL_HOST:
-		break;
-
 	case LINE6_RESET:
 		dev_info(variax->line6.ifcdev, "VARIAX reset\n");
 		break;
@@ -154,13 +147,6 @@ void line6_variax_process_message(struct usb_line6_variax *variax)
 			variax_startup4((unsigned long)variax);
 		}
 		break;
-
-	case LINE6_SYSEX_END:
-		break;
-
-	default:
-		dev_dbg(variax->line6.ifcdev,
-			"Variax: unknown message %02X\n", buf[0]);
 	}
 }