drivers: Kill now superfluous ->last_rx stores

The generic packet receive code takes care of setting
netdev->last_rx when necessary, for the sake of the
bonding ARP monitor.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Neil Horman <nhorman@txudriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/infiniband/hw/amso1100/c2.c

@@ -530,7 +530,6 @@ static void c2_rx_interrupt(struct net_device *netdev)
 
 		netif_rx(skb);
 
-		netdev->last_rx = jiffies;
 		netdev->stats.rx_packets++;
 		netdev->stats.rx_bytes += buflen;
 	}