media: igorplugusb: remove superfluous usb_unlink_urb()

Calling that on yourself while the completion handler
is running is a NOP. Remove it.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/rc/igorplugusb.c

@@ -110,7 +110,6 @@ static void igorplugusb_callback(struct urb *urb)
 	case -ECONNRESET:
 	case -ENOENT:
 	case -ESHUTDOWN:
-		usb_unlink_urb(urb);
 		return;
 	default:
 		dev_warn(ir->dev, "Error: urb status = %d\n", urb->status);