Silence warning

Refs trac:3898

This commit was SVN r29659.

The following Trac tickets were found above:
  Ticket 3898 --> https://svn.open-mpi.org/trac/ompi/ticket/3898

ompi/mca/dpm/orte/dpm_orte.c

@@ -166,7 +166,6 @@ static int connect_accept(ompi_communicator_t *comm, int root,
 
     orte_grpcomm_coll_id_t id;
     orte_grpcomm_collective_t modex;
-    opal_list_item_t *item;
     orte_namelist_t *nm;
     orte_rml_recv_cb_t xfer;
     orte_process_name_t carport;