diff -r b812a85b3aa4 -r 181e6a03249b src/hotspot/os/windows/os_windows.cpp
--- a/src/hotspot/os/windows/os_windows.cpp	Fri Aug 10 09:30:26 2018 -0400
+++ b/src/hotspot/os/windows/os_windows.cpp	Fri Aug 10 09:36:01 2018 -0400
@@ -3609,11 +3609,6 @@
   return OS_OK;
 }
 
-
-// Hint to the underlying OS that a task switch would not be good.
-// Void return because it's a hint and can fail.
-void os::hint_no_preempt() {}
-
 void os::interrupt(Thread* thread) {
   debug_only(Thread::check_for_dangling_thread_pointer(thread);)