nixos/tests/systemd-timesyncd.nix: get rid of `with lib`

  name = "systemd-timesyncd";

  nodes = {

    current = mkVM {};

    pre1909 = mkVM ({lib, ... }: with lib; {

    pre1909 = mkVM ({lib, ... }: {

      # create the path that should be migrated by our activation script when

      # upgrading to a newer nixos version

      system.stateVersion = "19.03";

      system.activationScripts.simulate-old-timesync-state-dir = mkBefore ''

      system.activationScripts.simulate-old-timesync-state-dir = lib.mkBefore ''

        rm -f /var/lib/systemd/timesync

        mkdir -p /var/lib/systemd /var/lib/private/systemd/timesync

        ln -s /var/lib/private/systemd/timesync /var/lib/systemd/timesync