bng_en: Remove jumbo_remove step from TX path

Now that the kernel doesn't insert HBH for BIG TCP IPv6 packets, remove
unnecessary steps from the bng_en TX path, that used to check and
remove HBH.

Signed-off-by: Alice Mikityanska <alice@isovalent.com>
Link: https://patch.msgid.link/20260205133925.526371-12-alice.kernel@fastmail.im
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: gentoo-root

drivers/net/ethernet/broadcom/bnge/bnge_txrx.c

@@ -1463,9 +1463,6 @@ netdev_tx_t bnge_start_xmit(struct sk_buff *skb, struct net_device *dev)
 			return NETDEV_TX_BUSY;
 	}
 
-	if (unlikely(ipv6_hopopt_jumbo_remove(skb)))
-		goto tx_free;
-
 	last_frag = skb_shinfo(skb)->nr_frags;
 
 	txbd = &txr->tx_desc_ring[TX_RING(bn, prod)][TX_IDX(prod)];