diff --git a/Userland/Libraries/LibJS/Runtime/ThrowableFormat.h b/Userland/Libraries/LibJS/Runtime/ThrowableFormat.h
deleted file mode 100644
index 2505d105bd..0000000000
--- a/Userland/Libraries/LibJS/Runtime/ThrowableFormat.h
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
-
-#pragma once
-
-#include <AK/CheckedFormatString.h>
-#include <AK/DeprecatedString.h>
-#include <AK/Format.h>
-#include <LibJS/Runtime/Completion.h>
-#include <LibJS/Runtime/ErrorTypes.h>
-#include <LibJS/Runtime/VM.h>
-
-namespace JS {
-
-template<typename... Args>
-ThrowCompletionOr<DeprecatedString> deprecated_format(VM& vm, CheckedFormatString<Args...>&& fmtstr, Args const&... args)
-{
-    StringBuilder builder;
-    AK::VariadicFormatParams<AK::AllowDebugOnlyFormatters::No, Args...> parameters { args... };
-
-    TRY_OR_THROW_OOM(vm, vformat(builder, fmtstr.view(), parameters));
-    return builder.to_deprecated_string();
-}
-
-}