Disable lightdm test

It's hanging in the OCR step for hours.

@aszlig

http://hydra.nixos.org/build/24268601

Changed files
+2 -2
nixos
+1 -1
nixos/release-combined.nix
···
(all nixos.tests.bootBiosCdrom)
(all nixos.tests.ipv6)
(all nixos.tests.kde4)
-
(all nixos.tests.lightdm)
+
#(all nixos.tests.lightdm)
(all nixos.tests.login)
(all nixos.tests.misc)
(all nixos.tests.nat.firewall)
+1 -1
nixos/release.nix
···
tests.kde4 = callTest tests/kde4.nix {};
tests.kubernetes = hydraJob (import tests/kubernetes.nix { system = "x86_64-linux"; });
tests.latestKernel.login = callTest tests/login.nix { latestKernel = true; };
-
tests.lightdm = callTest tests/lightdm.nix {};
+
#tests.lightdm = callTest tests/lightdm.nix {};
tests.login = callTest tests/login.nix {};
#tests.logstash = callTest tests/logstash.nix {};
tests.misc = callTest tests/misc.nix {};