--- old/src/share/vm/gc/g1/g1RemSet.hpp	2017-07-10 14:17:03.979587080 +0200
+++ new/src/share/vm/gc/g1/g1RemSet.hpp	2017-07-10 14:17:03.883584102 +0200
@@ -142,7 +142,6 @@
   // Print accumulated summary info from the start of the VM.
   void print_summary_info();
 
-  void initialize_periodic_summary_info();
   // Print accumulated summary info from the last time called.
   void print_periodic_summary_info(const char* header, uint period_count);