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diff --git a/vnet/vnet/adj/adj_midchain.h b/vnet/vnet/adj/adj_midchain.h
deleted file mode 100644
index ae414aea6dc..00000000000
--- a/vnet/vnet/adj/adj_midchain.h
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-/**
- * Midchain Adjacency sub-type. These adjs represent an L3 peer on a
- * tunnel interface. The tunnel's adjacency is thus not the end of the chain,
- * and needs to stack on/link to another chain (or portion of the graph) to
- * reach the tunnel's destination.
- */
-
-#ifndef __ADJ_MIDCHAIN_H__
-#define __ADJ_MIDCHAIN_H__
-
-#include <vnet/adj/adj.h>
-
-/**
- * @brief Flags controlling the midchain adjacency
- */
-typedef enum adj_midchain_flag_t_
-{
-    /**
-     * No flags
-     */
-    ADJ_MIDCHAIN_FLAG_NONE = 0,
-
-    /**
-     * Packets TX through the midchain do not increment the interface
-     * counters. This should be used when the adj is associated with an L2
-     * interface and that L2 interface is in a bridege domain. In that case
-     * the packet will have traversed the interface's TX node, and hence have
-     * been counted, before it traverses ths midchain
-     */
-    ADJ_MIDCHAIN_FLAG_NO_COUNT = (1 << 0),
-} adj_midchain_flag_t;
-
-/**
- * @brief
- *  Convert an existing neighbour adjacency into a midchain
- *
- * @param adj_index
- *  The index of the neighbour adjacency.
- *
- * @param post_rewrite_node
- *  The VLIB graph node that provides the post-encap fixup.
- *  where 'fixup' is e.g., correcting chksum, length, etc.
- *
- * @param rewrite
- *  The rewrite.
- */
-extern void adj_nbr_midchain_update_rewrite(adj_index_t adj_index,
-					    adj_midchain_fixup_t fixup,
-					    adj_midchain_flag_t flags,
-					    u8 *rewrite);
-
-/**
- * @brief
- *  [re]stack a midchain. 'Stacking' is the act of forming parent-child
- *  relationships in the data-plane graph.
- *
- * @param adj_index
- *  The index of the midchain to stack
- *
- * @param dpo
- *  The parent DPO to stack onto (i.e. become a child of).
- */
-extern void adj_nbr_midchain_stack(adj_index_t adj_index,
-				   const dpo_id_t *dpo);
-
-/**
- * @brief
- *  unstack a midchain. This will break the chain between the midchain and
- *  the next graph section. This is a implemented as stack-on-drop
- *
- * @param adj_index
- *  The index of the midchain to stack
- */
-extern void adj_nbr_midchain_unstack(adj_index_t adj_index);
-
-/**
- * @brief
- *  Module initialisation
- */
-extern void adj_midchain_module_init(void);
-
-/**
- * @brief
- * Format a midchain adjacency
- */
-extern u8* format_adj_midchain(u8* s, va_list *ap);
-
-#endif