1 files changed, 0 insertions, 65 deletions
diff --git a/src/mongo/util/immutable/unordered_set.h b/src/mongo/util/immutable/unordered_set.h
deleted file mode 100644
index c5133218007..00000000000
--- a/src/mongo/util/immutable/unordered_set.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/**
- *    Copyright (C) 2023-present MongoDB, Inc.
- *
- *    This program is free software: you can redistribute it and/or modify
- *    it under the terms of the Server Side Public License, version 1,
- *    as published by MongoDB, Inc.
- *
- *    This program is distributed in the hope that it will be useful,
- *    but WITHOUT ANY WARRANTY; without even the implied warranty of
- *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *    Server Side Public License for more details.
- *
- *    You should have received a copy of the Server Side Public License
- *    along with this program. If not, see
- *    <http://www.mongodb.com/licensing/server-side-public-license>.
- *
- *    As a special exception, the copyright holders give permission to link the
- *    code of portions of this program with the OpenSSL library under certain
- *    conditions as described in each individual source file and distribute
- *    linked combinations including the program with the OpenSSL library. You
- *    must comply with the Server Side Public License in all respects for
- *    all of the code used other than as permitted herein. If you modify file(s)
- *    with this exception, you may extend this exception to your version of the
- *    file(s), but you are not obligated to do so. If you do not wish to do so,
- *    delete this exception statement from your version. If you delete this
- *    exception statement from all source files in the program, then also delete
- *    it in the license file.
- */
-
-#pragma once
-
-#include <immer/set.hpp>
-#include <immer/set_transient.hpp>
-
-#include "mongo/stdx/trusted_hasher.h"
-#include "mongo/util/immutable/details/memory_policy.h"
-
-namespace mongo::immutable {
-
-/**
- * Immutable unordered hash set.
- *
- * Interfaces that "modify" the hash set are 'const' and returns a new version of the set with
- * the modifications applied and leaves the original version untouched.
- *
- * It is optimized for efficient copies and low memory usage when multiple versions of the set
- * exist simultaneously at the expense of regular lookups not being as efficient as the regular
- * stdx unordered containers. Suitable for use in code that uses the copy-on-write
- * pattern.
- *
- * Thread-safety: All methods are const, it is safe to perform modifications that result in new
- * versions from multiple threads concurrently.
- *
- * Memory management: Internal memory management is done using reference counting, memory is free'd
- * as references to different versions of the set are released.
- *
- * Multiple modifications can be done efficiently using the 'transient()' interface.
- *
- * Documentation: 'immer/set.h' and https://sinusoid.es/immer/
- */
-template <class T,
-          class Hasher = DefaultHasher<T>,
-          class Eq = absl::container_internal::hash_default_eq<T>>
-using unordered_set = immer::set<T, EnsureTrustedHasher<Hasher, T>, Eq, detail::MemoryPolicy>;
-}  // namespace mongo::immutable