8309907: Remove unused _print_gc_overhead_limit_would_be_exceeded

Reviewed-by: tschatzl

Author: albertnetymk

src/hotspot/share/gc/shared/gcOverheadChecker.cpp

@@ -30,7 +30,6 @@
 
 GCOverheadChecker::GCOverheadChecker() :
   _gc_overhead_limit_exceeded(false),
-  _print_gc_overhead_limit_would_be_exceeded(false),
   _gc_overhead_limit_count(0) {
   assert(GCOverheadLimitThreshold > 0,
     "No opportunity to clear SoftReferences before GC overhead limit");

src/hotspot/share/gc/shared/gcOverheadChecker.hpp

@@ -42,9 +42,6 @@ class GCOverheadChecker: public CHeapObj<mtGC> {
   // This is a hint for the heap:  we've detected that GC times
   // are taking longer than GCTimeLimit allows.
   bool _gc_overhead_limit_exceeded;
-  // Use for diagnostics only.  If UseGCOverheadLimit is false,
-  // this variable is still set.
-  bool _print_gc_overhead_limit_would_be_exceeded;
   // Count of consecutive GC that have exceeded the
   // GC time limit criterion
   uint _gc_overhead_limit_count;