diff -r 3b998574be4b -r 82b2ba888190 src/hotspot/share/gc/z/zWorkers.hpp
--- a/src/hotspot/share/gc/z/zWorkers.hpp	Wed Nov 20 10:37:46 2019 +0100
+++ b/src/hotspot/share/gc/z/zWorkers.hpp	Wed Nov 20 10:37:46 2019 +0100
@@ -37,9 +37,6 @@
   void run(ZTask* task, uint nworkers);
 
 public:
-  static uint calculate_nparallel();
-  static uint calculate_nconcurrent();
-
   ZWorkers();
 
   uint nparallel() const;