diff --git a/xdr/Stellar-lighthorizon.x b/xdr/Stellar-lighthorizon.x
deleted file mode 100644
index 8955871cd1..0000000000
--- a/xdr/Stellar-lighthorizon.x
+++ /dev/null
@@ -1,39 +0,0 @@
-// Copyright 2022 Stellar Development Foundation and contributors. Licensed
-// under the Apache License, Version 2.0. See the COPYING file at the root
-// of this distribution or at http://www.apache.org/licenses/LICENSE-2.0
-
-%#include "xdr/Stellar-ledger.h"
-%#include "xdr/Stellar-types.h"
-
-namespace stellar
-{
-
-struct BitmapIndex {
-    uint32 firstBit;
-    uint32 lastBit;
-    Value bitmap;
-};
-
-struct TrieIndex {
-    uint32 version_; // goxdr gives an error if we simply use "version" as an identifier
-    TrieNode root;
-};
-
-struct TrieNodeChild {
-    opaque key[1];
-    TrieNode node;
-};
-
-struct TrieNode {
-    Value prefix;
-    Value value;
-    TrieNodeChild children<>;
-};
-
-union SerializedLedgerCloseMeta switch (int v)
-{
-case 0:
-    LedgerCloseMeta v0;
-};
-
-}