Remove reference to --network-ports

We dropped the option in Ia0df205ea568f089c7cb7e5464bde76d294f4c36.

Change-Id: I68ada9c2e28a1c81bc89cb46e26acdb7df45e81e

tripleoclient/v1/overcloud_deploy.py

@@ -903,7 +903,7 @@ class DeployOvercloud(command.Command):
                                    'baremetal deployment'))
         parser.add_argument('--network-config',
                             help=_('Apply network config to provisioned '
-                                   'nodes. (Implies "--network-ports")'),
+                                   'nodes.'),
                             default=False,
                             action="store_true")
         parser.add_argument(