pmix/base: remove all opal_show_help()

opal_show_help() is no longer used in the PMIx base; remove all traces of
it (including the now-stale help-pmix-base.txt file).

Signed-off-by: Jeff Squyres <jsquyres@cisco.com>

Author: jsquyres

opal/mca/pmix/base/Makefile.am

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2010      Cisco Systems, Inc.  All rights reserved.
+# Copyright (c) 2010-2022 Cisco Systems, Inc.  All rights reserved.
 # Copyright (c) 2012-2013 Los Alamos National Security, Inc.  All rights reserved.
 # Copyright (c) 2014-2019 Intel, Inc.  All rights reserved.
 # $COPYRIGHT$
@@ -9,8 +9,6 @@
 # $HEADER$
 #
 
-dist_opaldata_DATA += base/help-pmix-base.txt
-
 headers += \
 	base/base.h \
 	base/static-components.h

opal/mca/pmix/base/help-pmix-base.txt

@@ -7,7 +7,7 @@
  *                         and Technology (RIST). All rights reserved.
  * Copyright (c) 2016      Mellanox Technologies, Inc.
  *                         All rights reserved.
- * Copyright (c) 2016      Cisco Systems, Inc.  All rights reserved.
+ * Copyright (c) 2016-2022 Cisco Systems, Inc.  All rights reserved.
  * Copyright (c) 2021      Nanook Consulting.  All rights reserved.
  * $COPYRIGHT$
  *
@@ -32,7 +32,6 @@
 #include "opal/util/argv.h"
 #include "opal/util/output.h"
 #include "opal/util/proc.h"
-#include "opal/util/show_help.h"
 #include "opal_stdint.h"
 
 #include "opal/mca/pmix/base/base.h"