Remove NewJSObjectWithMemento

src/factory.h

Index: src/factory.h
diff --git a/src/factory.h b/src/factory.h
index 7711c32ae566640824c95db7f9237bf3412a18c8..023ec5f0421d7e33e270dbbb9ff7599b299d74a1 100644
--- a/src/factory.h
+++ b/src/factory.h
@@ -438,9 +438,6 @@ class V8_EXPORT_PRIVATE Factory final {
   // runtime.
   Handle<JSObject> NewJSObject(Handle<JSFunction> constructor,
                                PretenureFlag pretenure = NOT_TENURED);
-  // JSObject that should have a memento pointing to the allocation site.
-  Handle<JSObject> NewJSObjectWithMemento(Handle<JSFunction> constructor,
-                                          Handle<AllocationSite> site);
   // JSObject without a prototype.
   Handle<JSObject> NewJSObjectWithNullProto();