staging: unisys: visornic: remove visornic_poll prototype

Remove visornic_poll prototype, because it is not needed.
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/visornic/visornic_main.c

@@ -141,7 +141,6 @@ struct visornic_devdata {
 	struct uiscmdrsp cmdrsp[SIZEOF_CMDRSP];
 };
 
-static int visornic_poll(struct napi_struct *napi, int budget);
 static void poll_for_irq(unsigned long v);
 
 /**