Fix broken SimpleScheduler.schedule_run_instance()
Fix broken SimpleScheduler.schedule_run_instance()

 * The fix for 1037829 broke SimpleScheduler by unnecessarily
   including the 'self' parameter in the invocation of the parent's
   schedule_run_instance().  This change removes the 'self' parameter.
 * Addresses bug 1041385

Change-Id: I95b28fce9b17b6c1d9ca2f19cd83608cde8479ee

n0ano/gantt,n0ano/gantt