Remove old-style debug message

src/drivers/net/e1000.c

 	e1000_read_mac_addr(&hw);
 	memcpy (nic->node_addr, hw.mac_addr, ETH_ALEN);
 	
-	printf("Ethernet addr: %!\n", nic->node_addr);
-
 	/* reset the hardware with the new settings */
 
 	ret_val = e1000_reset(&hw);