8316513: Serial: Remove unused invalidate_remembered_set

Reviewed-by: tschatzl

src/hotspot/share/gc/serial/tenuredGeneration.cpp

@@ -143,12 +143,6 @@ void TenuredGeneration::shrink(size_t bytes) {
                       name(), old_mem_size/K, new_mem_size/K);
 }
 
-// Objects in this generation may have moved, invalidate this
-// generation's cards.
-void TenuredGeneration::invalidate_remembered_set() {
-  _rs->invalidate(used_region());
-}
-
 void TenuredGeneration::compute_new_size_inner() {
   assert(_shrink_factor <= 100, "invalid shrink factor");
   size_t current_shrink_factor = _shrink_factor;

src/hotspot/share/gc/serial/tenuredGeneration.hpp

@@ -85,8 +85,6 @@ class TenuredGeneration: public Generation {
  public:
   virtual void compute_new_size();
 
-  virtual void invalidate_remembered_set();
-
   // Grow generation with specified size (returns false if unable to grow)
   bool grow_by(size_t bytes);
   // Grow generation to reserved size.

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

@@ -326,10 +326,6 @@ class Generation: public CHeapObj<mtGC> {
   // each.
   virtual void object_iterate(ObjectClosure* cl);
 
-  // Inform a generation that some of its objects have moved.  [e.g. The
-  // generation's spaces were compacted, invalidating the card table.]
-  virtual void invalidate_remembered_set() { }
-
   // Block abstraction.
 
   // Returns the address of the start of the "block" that contains the