--- old/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	2018-11-16 14:39:43.674840491 +0100
+++ new/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	2018-11-16 14:39:43.235826961 +0100
@@ -60,7 +60,6 @@
 
 // Forward declarations
 class HeapRegion;
-class HRRSCleanupTask;
 class GenerationSpec;
 class G1ParScanThreadState;
 class G1ParScanThreadStateSet;