Remove unused file and minimize the usock uri contribution (add explanation as to why)

Refs trac:4280

This commit was SVN r30744.

The following Trac tickets were found above:
  Ticket 4280 --> https://svn.open-mpi.org/trac/ompi/ticket/4280

orte/mca/oob/usock/oob_usock_common.c

@@ -1,84 +0,0 @@
-/*
- * Copyright (c) 2004-2010 The Trustees of Indiana University and Indiana
- *                         University Research and Technology
- *                         Corporation.  All rights reserved.
- * Copyright (c) 2004-2011 The University of Tennessee and The University
- *                         of Tennessee Research Foundation.  All rights
- *                         reserved.
- * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
- *                         University of Stuttgart.  All rights reserved.
- * Copyright (c) 2004-2005 The Regents of the University of California.
- *                         All rights reserved.
- * Copyright (c) 2006-2013 Los Alamos National Security, LLC. 
- *                         All rights reserved.
- * Copyright (c) 2009-2012 Cisco Systems, Inc.  All rights reserved.
- * Copyright (c) 2011      Oak Ridge National Labs.  All rights reserved.
- * Copyright (c) 2013      Intel, Inc.  All rights reserved.
- * $COPYRIGHT$
- *
- * Additional copyrights may follow
- *
- * $HEADER$
- *
- */
-
-#include "orte_config.h"
-#include "orte/types.h"
-#include "opal/types.h"
-
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-#include <fcntl.h>
-#ifdef HAVE_NETINET_IN_H
-#include <netinet/in.h>
-#endif
-#ifdef HAVE_ARPA_INET_H
-#include <arpa/inet.h>
-#endif
-#ifdef HAVE_NETDB_H
-#include <netdb.h>
-#endif
-#include <ctype.h>
-
-#include "opal/util/show_help.h"
-#include "opal/util/error.h"
-#include "opal/util/output.h"
-#include "opal/opal_socket_errno.h"
-#include "opal/util/if.h"
-#include "opal/util/net.h"
-#include "opal/util/argv.h"
-#include "opal/class/opal_hash_table.h"
-#include "opal/class/opal_list.h"
-
-#include "orte/mca/errmgr/errmgr.h"
-#include "orte/mca/ess/ess.h"
-#include "orte/util/name_fns.h"
-#include "orte/util/parse_options.h"
-#include "orte/util/show_help.h"
-#include "orte/runtime/orte_globals.h"
-
-#include "orte/mca/oob/usock/oob_usock.h"
-#include "orte/mca/oob/usock/oob_usock_component.h"
-#include "oob_usock_peer.h"
-#include "oob_usock_common.h"
-
-/**
- * Set socket buffering
- */
-
-mca_oob_usock_peer_t* mca_oob_usock_peer_lookup(const orte_process_name_t *name)
-{
-    mca_oob_usock_peer_t *peer;
-    uint64_t ui64;
-
-    memcpy(&ui64, (char*)name, sizeof(uint64_t));
-    if (OPAL_SUCCESS != opal_hash_table_get_value_uint64(&mca_oob_usock_module.peers, ui64, (void**)&peer)) {
-        return NULL;
-    }
-    return peer;
-}
-

orte/mca/oob/usock/oob_usock_component.c

@@ -276,10 +276,18 @@ static int component_send(orte_rml_send_t *msg)
     return ORTE_SUCCESS;
 }
 
+/* although we do not use the uri to determine a peer's
+ * address (since we know the path via the session directory),
+ * we have to provide something to the uri. This is needed
+ * as other places in ORTE use a NULL uri to indicate lack
+ * of a daemon. We may eventually remove that dependency,
+ * but for now, just ensure that the uri is never NULL,
+ * even if we are the only active OOB transport.
+ */
 static char* component_get_addr(void)
 {
     char *tmp;
-    tmp = strdup(mca_oob_usock_component.address.sun_path);
+    tmp = strdup("usock");
     return tmp;
 }