Do not force 'hash' gds on direct modex in pmix4x

* Forcing the 'hash' gds component should not be necessary any more.

Signed-off-by: Joshua Hursey <jhursey@us.ibm.com>

opal/mca/pmix/pmix4x/pmix4x_client.c

@@ -11,6 +11,7 @@
  * Copyright (c) 2017-2018 The University of Tennessee and The University
  *                         of Tennessee Research Foundation.  All rights
  *                         reserved.
+ * Copyright (c) 2019      IBM Corporation.  All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -101,11 +102,6 @@ int pmix4x_client_init(opal_list_t *ilist)
         ninfo = 0;
     }
 
-    /* check for direct modex use-case */
-    if (opal_pmix_base_async_modex && !opal_pmix_collect_all_data) {
-        opal_setenv("PMIX_MCA_gds", "hash", true, &environ);
-    }
-
     OPAL_PMIX_RELEASE_THREAD(&opal_pmix_base.lock);
     rc = PMIx_Init(&mca_pmix_pmix4x_component.myproc, pinfo, ninfo);
     if (NULL != pinfo) {

opal/mca/pmix/pmix4x/pmix4x_server_south.c

@@ -12,6 +12,7 @@
  * Copyright (c) 2017-2018 The University of Tennessee and The University
  *                         of Tennessee Research Foundation.  All rights
  *                         reserved.
+ * Copyright (c) 2019      IBM Corporation.  All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -132,11 +133,6 @@ int pmix4x_server_init(opal_pmix_server_module_t *module,
         }
     }
 
-    /* check for direct modex use-case */
-    if (opal_pmix_base_async_modex && !opal_pmix_collect_all_data) {
-        opal_setenv("PMIX_MCA_gds", "hash", true, &environ);
-    }
-
     /* insert ourselves into our list of jobids - it will be the
      * first, and so we'll check it first */
     job = OBJ_NEW(opal_pmix4x_jobid_trkr_t);