message: hooking mmap is no longer needed
diff: @@ -861,12 +861,6 @@ impl<'a, 'tcx> EvalContext<'a, 'tcx> {
  self.write_primval(dest, result, dest_ty)?;
  }
  - "mmap" => {
  - // This is a horrible hack, but well... the guard page mechanism calls mmap and expects a particular return value, so we give it that value
  - let addr = args[0].read_ptr(&self.memory)?;
  - self.write_ptr(dest, addr, dest_ty)?;
  - }
  -
  // Hook pthread calls that go to the thread-local storage memory subsystem
  "pthread_key_create" => {
  let key_ptr = args[0].read_ptr(&self.memory)?;
  