8255894: Remove unused StubRoutines::_zero_aligned_words

Reviewed-by: shade

Author: cl4es

src/hotspot/share/runtime/stubRoutines.cpp

@@ -111,8 +111,6 @@ address StubRoutines::_arrayof_jlong_disjoint_arraycopy  = CAST_FROM_FN_PTR(addr
 address StubRoutines::_arrayof_oop_disjoint_arraycopy    = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_oop_copy);
 address StubRoutines::_arrayof_oop_disjoint_arraycopy_uninit  = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_oop_copy_uninit);
 
-address StubRoutines::_zero_aligned_words = CAST_FROM_FN_PTR(address, Copy::zero_to_words);
-
 address StubRoutines::_data_cache_writeback              = NULL;
 address StubRoutines::_data_cache_writeback_sync         = NULL;
 

src/hotspot/share/runtime/stubRoutines.hpp

@@ -207,9 +207,6 @@ class StubRoutines: AllStatic {
   static address _arrayof_jshort_fill;
   static address _arrayof_jint_fill;
 
-  // zero heap space aligned to jlong (8 bytes)
-  static address _zero_aligned_words;
-
   static address _aescrypt_encryptBlock;
   static address _aescrypt_decryptBlock;
   static address _cipherBlockChaining_encryptAESCrypt;
@@ -442,8 +439,6 @@ class StubRoutines: AllStatic {
 
   static address select_fill_function(BasicType t, bool aligned, const char* &name);
 
-  static address zero_aligned_words()  { return _zero_aligned_words; }
-
   //
   // Safefetch stub support
   //