staging: unisys: visorbus: remove prototype controlvm_respond

Remove the unneeded prototype for controlvm_respond.
Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Reviewed-by: Tim Sell <Timothy.Sell@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/unisys/visorbus/visorchipset.c

@@ -271,8 +271,6 @@ static struct platform_device visorchipset_platform_device = {
 };
 
 /* Function prototypes */
-static void controlvm_respond(struct controlvm_message_header *msg_hdr,
-			      int response);
 static void controlvm_respond_chipset_init(
 		struct controlvm_message_header *msg_hdr, int response,
 		enum ultra_chipset_feature features);