USB: serial: remove debug parameter from usb_serial_debug_data()

We should use dev_dbg() for usb_serial_debug_data() like all of the rest
of the usb-serial drivers use, so remove the debug parameter as it's not
needed.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index 6f05d64..d750772 100644
--- a/drivers/usb/serial/opticon.c
+++ b/drivers/usb/serial/opticon.c
@@ -87,8 +87,7 @@
 		goto exit;
 	}
 
-	usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length,
-			      data);
+	usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data);
 
 	if (urb->actual_length > 2) {
 		data_length = urb->actual_length - 2;
@@ -276,7 +275,7 @@
 
 	memcpy(buffer, buf, count);
 
-	usb_serial_debug_data(debug, &port->dev, __func__, count, buffer);
+	usb_serial_debug_data(&port->dev, __func__, count, buffer);
 
 	/* The conncected devices do not have a bulk write endpoint,
 	 * to transmit data to de barcode device the control endpoint is used */