USB: serial: ezusb: remove last printk() call

This code shouldn't be calling printk(), no one needs to know this debug
message, the return code is good enough.

Cc: "René Bürgel" <rene.buergel@sohard.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/serial/ezusb.c

@@ -26,11 +26,8 @@ int ezusb_writememory(struct usb_device *dev, int address,
 	int result;
 	unsigned char *transfer_buffer;
 
-	if (!dev) {
-		printk(KERN_ERR "ezusb: %s - no physical device present, "
-		       "failing.\n", __func__);
+	if (!dev)
 		return -ENODEV;
-	}
 
 	transfer_buffer = kmemdup(data, length, GFP_KERNEL);
 	if (!transfer_buffer) {