Remove last references to NeanderObject

src/factory.h

Index: src/factory.h
diff --git a/src/factory.h b/src/factory.h
index 144e0db5b22b496793de6ab4b5ec6f8c712ef419..6a64e93f7d44431090614267ba7ef1d92e20bd3d 100644
--- a/src/factory.h
+++ b/src/factory.h
@@ -430,12 +430,6 @@ class V8_EXPORT_PRIVATE Factory final {
   SIMD128_TYPES(SIMD128_NEW_DECL)
 #undef SIMD128_NEW_DECL
 
-  // These objects are used by the api to create env-independent data
-  // structures in the heap.
-  inline Handle<JSObject> NewNeanderObject() {
-    return NewJSObjectFromMap(neander_map());
-  }
-
   Handle<JSWeakMap> NewJSWeakMap();
 
   Handle<JSObject> NewArgumentsObject(Handle<JSFunction> callee, int length);