Remove nfs_shared_infodir

No longer required in 15 SP6

jsc#PED-7425

xml/article_nfs_storage.xml

@@ -595,7 +595,7 @@ include /etc/drbd.d;</screen>
       Create a primitive to manage the NFS server daemon:
      </para>
 <screen>&prompt.crm.conf;<command>primitive nfsserver nfsserver \
-  params nfs_server_scope=SUSE nfs_shared_infodir="/var/lib/nfs"</command></screen>
+  params nfs_server_scope=SUSE</command></screen>
      <para>
       The <literal>nfs_server_scope</literal> must be the same on all nodes in the
       cluster that run the NFS server, but this is not set by default. All clusters