[IPV6]: Remove redundant RTM_DELLINK message.

Remove useless message. We get the right message from another
subsystem.
Signed-off-by: Milan Kocian <milon@wq.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv6/addrconf.c

@@ -2495,9 +2495,7 @@ static int addrconf_ifdown(struct net_device *dev, int how)
 	else
 		ipv6_mc_down(idev);
 
-	/* Step 5: netlink notification of this interface */
 	idev->tstamp = jiffies;
-	inet6_ifinfo_notify(RTM_DELLINK, idev);
 
 	/* Shot the device (if unregistered) */