Remove remaining stale references

Refs trac:4006

This commit was SVN r30027.

The following Trac tickets were found above:
  Ticket 4006 --> https://svn.open-mpi.org/trac/ompi/ticket/4006

ompi/debuggers/ompi_mpihandles_dll.c

@@ -92,9 +92,7 @@ opal_condition_t ompi_request_cond;
 size_t ompi_request_waiting;
 opal_mutex_t ompi_request_lock;
 opal_mutex_t opal_event_lock;
-uint32_t opal_progress_recursion_depth_counter;
 int opal_progress_spin_count;
-volatile int32_t opal_progress_thread_count;
 bool opal_mutex_check_locks;
 bool opal_uses_threads;
 #endif /* defined(__SUNPRO_C) */