"[ghost] Removes ghost demo."

This reverts commit 03e34d52cff747e1f1527f138fa672010085d2f5.

system/hosts/mcp/containers.nix

@@ -5,7 +5,6 @@
   imports = [
     ./containers/dm-companion.nix
     ./containers/freshrss.nix
-    ./containers/ghost.nix
     ./containers/gitea.nix
     ./containers/grafana.nix
     ./containers/jobhunt.nix

system/hosts/mcp/containers/ghost.nix

@@ -1,16 +0,0 @@
-{ config, ... }:
-let
-  inherit (import ./lib.nix config) mkContainer terakoda;
-in
-{
-  virtualisation.oci-containers.containers.ghost = mkContainer rec {
-    image = "ghost:5";
-    hostName = "ghost";
-    domain = terakoda;
-    port = 2368;
-    environment = {
-      "NODE_ENV" = "development";
-      "url" = "https://${hostName}.${domain}";
-    };
-  };
-}