diff -r 7c1d0616828c -r d6058bd73982 src/hotspot/share/gc/g1/g1RemSet.hpp
--- a/src/hotspot/share/gc/g1/g1RemSet.hpp	Tue Oct 08 20:47:46 2019 +0200
+++ b/src/hotspot/share/gc/g1/g1RemSet.hpp	Tue Oct 08 15:15:50 2019 -0400
@@ -61,7 +61,6 @@
   G1RemSetSummary _prev_period_summary;
 
   G1CollectedHeap* _g1h;
-  size_t _num_conc_refined_cards; // Number of cards refined concurrently to the mutator.
 
   G1CardTable*           _ct;
   G1Policy*              _g1p;
@@ -125,8 +124,6 @@
   // Print accumulated summary info from the last time called.
   void print_periodic_summary_info(const char* header, uint period_count);
 
-  size_t num_conc_refined_cards() const { return _num_conc_refined_cards; }
-
   // Rebuilds the remembered set by scanning from bottom to TARS for all regions
   // using the given work gang.
   void rebuild_rem_set(G1ConcurrentMark* cm, WorkGang* workers, uint worker_id_offset);