Revert of Moving ArraySplice Builtin to ElementsAccessor

src/elements.h

Index: src/elements.h
diff --git a/src/elements.h b/src/elements.h
index 16be8ecde3564941735e5e093ad920ec4d9e856e..0131f0baf00c6bee8f1dbc94b2e219c31d568190 100644
--- a/src/elements.h
+++ b/src/elements.h
@@ -131,11 +131,6 @@
                         Handle<FixedArrayBase> backing_store, Object** objects,
                         uint32_t start, int direction) = 0;
 
-  virtual Handle<JSArray> Splice(Handle<JSArray> receiver,
-                                 Handle<FixedArrayBase> backing_store,
-                                 uint32_t start, uint32_t delete_count,
-                                 Arguments args, uint32_t add_count) = 0;
-
  protected:
   friend class LookupIterator;