--- a/src/hotspot/share/gc/z/zNMethodTable.hpp	Tue Feb 19 13:47:45 2019 +0100
+++ b/src/hotspot/share/gc/z/zNMethodTable.hpp	Wed Feb 20 10:46:39 2019 +0100
@@ -41,7 +41,6 @@
 private:
   static ZNMethodTableEntry* _table;
   static size_t              _size;
-  static ZLock               _iter_lock;
   static ZNMethodTableEntry* _iter_table;
   static size_t              _iter_table_size;
   static ZArray<void*>       _iter_deferred_deletes;