vxlan: Remove unnecessary comments for vxlan_rcv() and vxlan_err_look…

…up()

Remove the two unnecessary comments around vxlan_rcv() and
vxlan_err_lookup(), which indicate that the callers are from
net/ipv{4,6}/udp.c. These callers are trivial to find. Additionally, the
comment for vxlan_rcv() missed that the caller could also be from
net/ipv6/udp.c.

Suggested-by: Nikolay Aleksandrov <razor@blackwall.org>
Suggested-by: Ido Schimmel <idosch@idosch.org>
Signed-off-by: Ted Chen <znscnchen@gmail.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20250206140002.116178-1-znscnchen@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/vxlan/vxlan_core.c

@@ -1670,7 +1670,6 @@ static bool vxlan_ecn_decapsulate(struct vxlan_sock *vs, void *oiph,
 	return err <= 1;
 }
 
-/* Callback from net/ipv4/udp.c to receive packets */
 static int vxlan_rcv(struct sock *sk, struct sk_buff *skb)
 {
 	struct vxlan_vni_node *vninode = NULL;
@@ -1840,7 +1839,6 @@ static int vxlan_rcv(struct sock *sk, struct sk_buff *skb)
 	return 0;
 }
 
-/* Callback from net/ipv{4,6}/udp.c to check that we have a VNI for errors */
 static int vxlan_err_lookup(struct sock *sk, struct sk_buff *skb)
 {
 	struct vxlan_dev *vxlan;