Cleanup: we are not patching entries any longer

runtime/vm/object.h

Index: runtime/vm/object.h
diff --git a/runtime/vm/object.h b/runtime/vm/object.h
index 8e4b24ed2981d54857c2e6d980d15e6774244fb5..77b7c3190ca8a9e0400b553af4b2cc547793becb 100644
--- a/runtime/vm/object.h
+++ b/runtime/vm/object.h
@@ -4342,6 +4342,20 @@ class Code : public Object {
   bool IsStubCode() const;
   bool IsFunctionCode() const;
 
+  void DisableDartCode() const;
+
+  void DisableStubCode() const;
+
+  void Enable() const {
+    if (!IsDisabled()) return;
+    ASSERT(instructions() != active_instructions());
+    set_active_instructions(instructions());
+  }
+
+  bool IsDisabled() const {
+    return instructions() != active_instructions();
+  }
+
  private:
   void set_state_bits(intptr_t bits) const;