Remove examples/home and the antigua WireGuard import script

The hand-written port of antigua's router role predates the installer and
the web UI; the router is configured through settings.json now. Its flake
outputs (the home configuration, installer-home, the home check) go too.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AeFqV9dZrK6nipHkPfyM4F

flake.nix

@@ -272,10 +272,6 @@
           ];
         };
 
-      packages.x86_64-linux.installer-home =
-        (self.lib.mkInstaller { configuration = self.nixosConfigurations.home; })
-        .config.system.build.isoImage;
-
       packages.x86_64-linux.installer-example =
         (self.lib.mkInstaller { configuration = self.nixosConfigurations.example; })
         .config.system.build.isoImage;
@@ -289,15 +285,6 @@
         ];
       };
 
-      # The home gateway replacing antigua's router role (see examples/home).
-      nixosConfigurations.home = nixpkgs.lib.nixosSystem {
-        system = "x86_64-linux";
-        modules = [
-          self.nixosModules.router
-          ./examples/home
-        ];
-      };
-
       # Appliance image (verity store, volatile root) for trying on hardware:
       #   nix build .#image   ->  result/*.raw
       nixosConfigurations.image = nixpkgs.lib.nixosSystem {
@@ -365,7 +352,6 @@
         // {
           # The example must keep building as a complete system.
           example = self.nixosConfigurations.example.config.system.build.toplevel;
-          home = self.nixosConfigurations.home.config.system.build.toplevel;
         };
 
       # `nix run .#lab`: boot the basic test topology in tmux, one console pane