Added network to docker --help and help cleanup

Fixes https://github.com/docker/docker/issues/16909

Signed-off-by: Madhu Venugopal <madhu@docker.com>
Upstream-commit: 3a779b2995
Component: cli

components/cli/docs/reference/commandline/network_ls.md

@@ -14,8 +14,6 @@ parent = "smn_cli"
 
     Lists all the networks created by the user
       --help=false          Print usage
-      -l, --latest=false    Show the latest network created
-      -n=-1                 Show n last created networks
       --no-trunc=false      Do not truncate the output
       -q, --quiet=false     Only display numeric IDs