along with the DDXTIME define that has been dropped in Xorg upstream, too.

  commit 985c34bf06af70a7296db8307899a17347a25558
  Author: Adam Jackson <ajax@theobromine.nwnk.net>
  Date:   Thu Jul 20 17:33:13 2006 -0400

      Remove the DDXTIME conditional, for being unused.