xdp-tools: re-add vlan_hdr struct

Drop the patch to re-add the vlan_hdr struct
because it is required now to build xdp-filter.

Signed-off-by: Til Kaiser <mail@tk154.de>
Link: https://github.com/openwrt/openwrt/pull/16798
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

package/network/utils/xdp-tools/patches/021-headers-xdp-drop-vlan_hdr-as-already-defined.patch

@@ -1,31 +0,0 @@
-From bc2a11227b5bed29d33926d5ff7e707228db9e87 Mon Sep 17 00:00:00 2001
-From: Christian Marangi <ansuelsmth@gmail.com>
-Date: Wed, 18 Jan 2023 20:07:58 +0100
-Subject: [PATCH] headers: xdp: drop vlan_hdr as already defined
-
-Drop vlan_hdr as already defined by bpf headers.
-
-Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
----
- headers/xdp/parsing_helpers.h | 10 ----------
- 1 file changed, 10 deletions(-)
-
---- a/headers/xdp/parsing_helpers.h
-+++ b/headers/xdp/parsing_helpers.h
-@@ -33,16 +33,6 @@ struct hdr_cursor {
- };
- 
- /*
-- *	struct vlan_hdr - vlan header
-- *	@h_vlan_TCI: priority and VLAN ID
-- *	@h_vlan_encapsulated_proto: packet type ID or len
-- */
--struct vlan_hdr {
--	__be16	h_vlan_TCI;
--	__be16	h_vlan_encapsulated_proto;
--};
--
--/*
-  * Struct icmphdr_common represents the common part of the icmphdr and icmp6hdr
-  * structures.
-  */