ip_gre: Removed unused ipgre netdev ops

When cleaning up unused ipgre code the ipgre_netdev_ops structure
was missed. Get rid of it now.

Fixes: d5822f4 ("gre: Remove dead ipgre code")
Signed-off-by: Greg Rose <gvrose8192@gmail.com>

datapath/linux/compat/ip_gre.c

@@ -1024,22 +1024,6 @@ static netdev_tx_t ipgre_xmit(struct sk_buff *skb,
 	return NETDEV_TX_OK;
 }
 
-static const struct net_device_ops ipgre_netdev_ops = {
-	.ndo_init		= ipgre_tunnel_init,
-	.ndo_uninit		= rpl_ip_tunnel_uninit,
-	.ndo_start_xmit		= ipgre_xmit,
-#ifdef	HAVE_RHEL7_MAX_MTU
-	.ndo_size		= sizeof(struct net_device_ops),
-	.extended.ndo_change_mtu = ip_tunnel_change_mtu,
-#else
-	.ndo_change_mtu		= ip_tunnel_change_mtu,
-#endif
-	.ndo_get_stats64	= ip_tunnel_get_stats64,
-#ifdef HAVE_GET_LINK_NET
-	.ndo_get_iflink		= ip_tunnel_get_iflink,
-#endif
-};
-
 static const struct net_device_ops gre_tap_netdev_ops = {
 	.ndo_init		= gre_tap_init,
 	.ndo_uninit		= rpl_ip_tunnel_uninit,