Remove default enabled openssh server

hosts/containers/leon/default.nix

@@ -45,6 +45,7 @@ in
       netConfig.hosts4.dnscache "9.9.9.9"
     ];
 
+    # TODO: enable
     firewall.enable = true;
   };
 
@@ -52,7 +53,6 @@ in
     enable = true;
     wheelNeedsPassword = false;
   };
-  services.openssh.enable = true;
 
   users.users.leon = {
     isNormalUser = true;

hosts/containers/scrape/default.nix

@@ -218,9 +218,5 @@ in {
      (map makeLuftScraperTimer luftqualitaetStations)
     );
 
-  # This value determines the NixOS release with which your system is to be
-  # compatible, in order to avoid breaking some software such as database
-  # servers. You should change this only after NixOS release notes say you
-  # should.
   system.stateVersion = "20.03"; # Did you read the comment?
 }