8300862: Remove some G1 collection set remembered set debugging code

Reviewed-by: ayang, iwalulya

src/hotspot/share/gc/g1/g1CollectedHeap.cpp

@@ -2486,55 +2486,6 @@ void G1CollectedHeap::print_tracing_info() const {
   concurrent_mark()->print_summary_info();
 }
 
-#ifndef PRODUCT
-// Helpful for debugging RSet issues.
-
-class PrintRSetsClosure : public HeapRegionClosure {
-private:
-  const char* _msg;
-  size_t _occupied_sum;
-
-public:
-  bool do_heap_region(HeapRegion* r) {
-    HeapRegionRemSet* hrrs = r->rem_set();
-    size_t occupied = hrrs->occupied();
-    _occupied_sum += occupied;
-
-    tty->print_cr("Printing RSet for region " HR_FORMAT, HR_FORMAT_PARAMS(r));
-    if (occupied == 0) {
-      tty->print_cr("  RSet is empty");
-    } else {
-      tty->print_cr("hrrs " PTR_FORMAT, p2i(hrrs));
-    }
-    tty->print_cr("----------");
-    return false;
-  }
-
-  PrintRSetsClosure(const char* msg) : _msg(msg), _occupied_sum(0) {
-    tty->cr();
-    tty->print_cr("========================================");
-    tty->print_cr("%s", msg);
-    tty->cr();
-  }
-
-  ~PrintRSetsClosure() {
-    tty->print_cr("Occupied Sum: " SIZE_FORMAT, _occupied_sum);
-    tty->print_cr("========================================");
-    tty->cr();
-  }
-};
-
-void G1CollectedHeap::print_cset_rsets() {
-  PrintRSetsClosure cl("Printing CSet RSets");
-  collection_set_iterate_all(&cl);
-}
-
-void G1CollectedHeap::print_all_rsets() {
-  PrintRSetsClosure cl("Printing All RSets");;
-  heap_region_iterate(&cl);
-}
-#endif // PRODUCT
-
 bool G1CollectedHeap::print_location(outputStream* st, void* addr) const {
   return BlockLocationPrinter<G1CollectedHeap>::print_location(st, addr);
 }

src/hotspot/share/gc/g1/g1CollectedHeap.hpp

@@ -1330,10 +1330,6 @@ public:
   // Override
   void print_tracing_info() const override;
 
-  // The following two methods are helpful for debugging RSet issues.
-  void print_cset_rsets() PRODUCT_RETURN;
-  void print_all_rsets() PRODUCT_RETURN;
-
   // Used to print information about locations in the hs_err file.
   bool print_location(outputStream* st, void* addr) const override;
 };