8242375: Shenandoah: Remove ShenandoahHeuristic::record_gc_start/end methods

Reviewed-by: shade, rkennke

src/hotspot/share/gc/shenandoah/shenandoahHeuristics.cpp

@@ -174,14 +174,6 @@ void ShenandoahHeuristics::choose_collection_set(ShenandoahCollectionSet* collec
                      cset_percent);
 }
 
-void ShenandoahHeuristics::record_gc_start() {
-  // Do nothing
-}
-
-void ShenandoahHeuristics::record_gc_end() {
-  // Do nothing
-}
-
 void ShenandoahHeuristics::record_cycle_start() {
   _cycle_start = os::elapsedTime();
 }

src/hotspot/share/gc/shenandoah/shenandoahHeuristics.hpp

@@ -96,10 +96,6 @@ public:
   ShenandoahHeuristics();
   virtual ~ShenandoahHeuristics();
 
-  void record_gc_start();
-
-  void record_gc_end();
-
   void record_metaspace_oom()     { _metaspace_oom.set(); }
   void clear_metaspace_oom()      { _metaspace_oom.unset(); }
   bool has_metaspace_oom() const  { return _metaspace_oom.is_set(); }

src/hotspot/share/gc/shenandoah/shenandoahUtils.cpp

@@ -83,12 +83,6 @@ ShenandoahGCPauseMark::ShenandoahGCPauseMark(uint gc_id, SvcGCMarker::reason_typ
           /* recordGCEndTime = */         true,
           /* countCollection = */         true
   );
-
-  _heap->heuristics()->record_gc_start();
-}
-
-ShenandoahGCPauseMark::~ShenandoahGCPauseMark() {
-  _heap->heuristics()->record_gc_end();
 }
 
 ShenandoahPausePhase::ShenandoahPausePhase(const char* title) :

src/hotspot/share/gc/shenandoah/shenandoahUtils.hpp

@@ -120,7 +120,6 @@ private:
 
 public:
   ShenandoahGCPauseMark(uint gc_id, SvcGCMarker::reason_type type);
-  ~ShenandoahGCPauseMark();
 };
 
 class ShenandoahSafepoint : public AllStatic {