--- a/src/hotspot/share/oops/instanceKlass.hpp	Sat Jan 05 10:48:54 2019 +0800
+++ b/src/hotspot/share/oops/instanceKlass.hpp	Sat Jan 05 20:08:24 2019 +0100
@@ -1019,7 +1019,6 @@
   bool is_leaf_class() const               { return _subklass == NULL; }
   GrowableArray<Klass*>* compute_secondary_supers(int num_extra_slots,
                                                   Array<InstanceKlass*>* transitive_interfaces);
-  bool compute_is_subtype_of(Klass* k);
   bool can_be_primary_super_slow() const;
   int oop_size(oop obj)  const             { return size_helper(); }
   // slow because it's a virtual call and used for verifying the layout_helper.