score: Replace STATES_DELAYING

Replace STATES_DELAYING with STATES_WAITING_FOR_TIME.

There is no need for separate timeout thread states.  The
Thread_Control::Timer::header and Watchdog_Control::cpu members can be
used to figure out the kind of timeout.

cpukit/libdebugger/rtems-debugger-threads.c

@@ -514,7 +514,6 @@ rtems_debugger_thread_state_str(rtems_debugger_thread* thread,
     DB_UINT           mask;
   };
   const struct mapper map[] = {
-    { "DELAY",  STATES_DELAYING },
     { "DORM",   STATES_DORMANT },
     { "LIFE",   STATES_LIFE_IS_CHANGING },
     { "SUSP",   STATES_SUSPENDED },