--- old/src/hotspot/share/gc/z/zUtils.cpp	2018-09-18 21:52:11.074261995 +0200
+++ new/src/hotspot/share/gc/z/zUtils.cpp	2018-09-18 21:52:10.770248886 +0200
@@ -22,8 +22,6 @@
  */
 
 #include "precompiled.hpp"
-#include "gc/shared/collectedHeap.hpp"
-#include "gc/z/zAddress.inline.hpp"
 #include "gc/z/zUtils.inline.hpp"
 #include "utilities/debug.hpp"
 
@@ -40,10 +38,3 @@
 
   return (uintptr_t)res;
 }
-
-void ZUtils::insert_filler_object(uintptr_t addr, size_t size) {
-  const size_t fill_size_in_words = bytes_to_words(size);
-  if (fill_size_in_words >= CollectedHeap::min_fill_size()) {
-    CollectedHeap::fill_with_objects((HeapWord*)ZAddress::good(addr), fill_size_in_words);
-  }
-}