Begin to remove heap/*

sky/engine/platform/heap/ThreadState.h

Index: sky/engine/platform/heap/ThreadState.h
diff --git a/sky/engine/platform/heap/ThreadState.h b/sky/engine/platform/heap/ThreadState.h
index 53c0cd0966d49515658d45e0fabc745391f485d3..441f82fc883fc30044521455571a6599cfbb1cb2 100644
--- a/sky/engine/platform/heap/ThreadState.h
+++ b/sky/engine/platform/heap/ThreadState.h
@@ -300,16 +300,8 @@ public:
     typedef HashSet<ThreadState*> AttachedThreadStateSet;
     static AttachedThreadStateSet& attachedThreads();
 
-    // Initialize threading infrastructure. Should be called from the main
-    // thread.
-    static void init();
-    static void shutdown();
-    static void shutdownHeapIfNecessary();
     bool isTerminating() { return m_isTerminating; }
 
-    static void attachMainThread();
-    static void detachMainThread();
-
     // Trace all persistent roots, called when marking the managed heap objects.
     static void visitPersistentRoots(Visitor*);