remove unused parameters..

main.c

@@ -219,11 +219,11 @@ main(void)
 
 	usb_printf("gs: %#x\r\n", Radio.GetStatus());
 
-	usb_printf("set modem\r\n", v);
+	usb_printf("set modem\r\n");
 	Radio.SetModem(MODEM_LORA);
 
 	usb_printf("check rffreq: %d\r\n", (int)Radio.CheckRfFrequency(914350 * 1000));
-	usb_printf("set channel\r\n", v);
+	usb_printf("set channel\r\n");
 	Radio.SetChannel(914350 * 1000);
 
 	v = Radio.Random();