Revert "installer: Disable udisks"

This reverts commit 571fb74f44.

The dependency on gtk2 was removed.

Co-authored-by: Florian Klink <flokli@flokli.de>

nixos/tests/installer.nix

@@ -54,8 +54,6 @@ let
 
         hardware.enableAllFirmware = lib.mkForce false;
 
-        services.udisks2.enable = lib.mkDefault false;
-
         ${replaceChars ["\n"] ["\n  "] extraConfig}
       }
     '';
@@ -295,8 +293,6 @@ let
               ++ optional (bootLoader == "grub" && grubVersion == 1) pkgs.grub
               ++ optionals (bootLoader == "grub" && grubVersion == 2) [ pkgs.grub2 pkgs.grub2_efi ];
 
-            services.udisks2.enable = mkDefault false;
-
             nix.binaryCaches = mkForce [ ];
             nix.extraOptions =
               ''