clan: remove config subcommand

This removes the `config` subcommand from the cli and the documentation
to keep the api surface small.

While this functionality was convenient it doesn't need to be surfaced
by the clan cli.

The remaining `config` python module should be ported to the `clan-app`
in a follow up pr. Because the functionality is currently only used by
the `clan-app`.
Ideally together with: #1830.

pkgs/clan-cli/default.nix

@@ -60,9 +60,7 @@ let
   source = runCommand "clan-cli-source" { } ''
     cp -r ${./.} $out
     chmod -R +w $out
-    rm $out/clan_cli/config/jsonschema
     ln -sf ${nixpkgs'} $out/clan_cli/nixpkgs
-    cp -r ${../../lib/jsonschema} $out/clan_cli/config/jsonschema
 
     ${classgen}/bin/classgen ${inventory-schema}/schema.json $out/clan_cli/inventory/classes.py
   '';