Remove useless variables.

This commit was SVN r32123.

ompi/mca/io/romio/romio/mpi-io/mpiu_external32.c

@@ -120,7 +120,6 @@ fn_exit:
 int MPIU_datatype_full_size(MPI_Datatype datatype, MPI_Aint *size)
 {
     int error_code = MPI_SUCCESS;
-    MPI_Aint extent = 0;
     MPI_Aint true_extent = 0;
     MPI_Aint true_lb = 0;
 

orte/runtime/orte_wait.c

@@ -107,7 +107,6 @@ static OBJ_CLASS_INSTANCE(orte_wait_tracker_t,
 
 /* Local Variables */
 static opal_event_t handler;
-static volatile int cb_enabled = true;
 static opal_list_t pending_cbs;
 
 /* Local Function Prototypes */