8304411: Remove unused CardTable::clear

Reviewed-by: tschatzl

Author: albertnetymk

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

@@ -363,13 +363,6 @@ void CardTable::clear_MemRegion(MemRegion mr) {
   memset(cur, clean_card, pointer_delta(last, cur, sizeof(CardValue)));
 }
 
-void CardTable::clear(MemRegion mr) {
-  for (int i = 0; i < _cur_covered_regions; i++) {
-    MemRegion mri = mr.intersection(_covered[i]);
-    if (!mri.is_empty()) clear_MemRegion(mri);
-  }
-}
-
 uintx CardTable::ct_max_alignment_constraint() {
   // Calculate maximum alignment using GCCardSizeInBytes as card_size hasn't been set yet
   return GCCardSizeInBytes * os::vm_page_size();

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

@@ -156,7 +156,6 @@ class CardTable: public CHeapObj<mtGC> {
   }
 
   virtual void invalidate(MemRegion mr);
-  void clear(MemRegion mr);
 
   // Provide read-only access to the card table array.
   const CardValue* byte_for_const(const void* p) const {