rtl8xxxu: Reduce console noise when removing the kernel module

USB urbs will return with a status != 0 when rmmod'ing the driver. No
need to fill the log with messages from rtl8xxxu_int_complete()
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c

@@ -5267,7 +5267,7 @@ static void rtl8xxxu_int_complete(struct urb *urb)
 		if (ret)
 			usb_unanchor_urb(urb);
 	} else {
-		dev_info(dev, "%s: Error %i\n", __func__, urb->status);
+		dev_dbg(dev, "%s: Error %i\n", __func__, urb->status);
 	}
 }