usbnet: remove noisy and hardly useful printk

With turned on hspa modem (Dell 5530 internal card) and activated usb auto
suspend, my system gets up 100 "usbnet_resume has delayed data" per
minute. I didnt noticed any pathological behaviour, so just drop
this message. if any objections, please at least change it to _DEBUG.
Signed-off-by: NChristian Samsel <christian.samsel@rwth-aachen.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/usb/usbnet.c

@@ -1457,7 +1457,6 @@ int usbnet_resume (struct usb_interface *intf)
 		spin_lock_irq(&dev->txq.lock);
 		while ((res = usb_get_from_anchor(&dev->deferred))) {
 
-			printk(KERN_INFO"%s has delayed data\n", __func__);
 			skb = (struct sk_buff *)res->context;
 			retval = usb_submit_urb(res, GFP_ATOMIC);
 			if (retval < 0) {