AK+Meta: Remove unused class RecursionDecision

AK/RecursionDecision.h

@@ -1,23 +0,0 @@
-/*
- * Copyright (c) 2021, sin-ack <sin-ack@protonmail.com>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
-
-#pragma once
-
-#include <AK/Platform.h>
-
-namespace AK {
-
-enum class RecursionDecision {
-    Recurse,
-    Continue,
-    Break,
-};
-
-}
-
-#if USING_AK_GLOBALLY
-using AK::RecursionDecision;
-#endif

Meta/gn/secondary/AK/BUILD.gn

@@ -138,7 +138,6 @@ shared_library("AK") {
     "QuickSort.h",
     "Random.cpp",
     "Random.h",
-    "RecursionDecision.h",
     "RedBlackTree.h",
     "RefCounted.h",
     "RefPtr.h",