[pddl_planner/demos/2011_saito/demo-taking-elevator]demo does not work (under the construction)

[solve-taking-elevator.l](https://github.com/jsk-ros-pkg/jsk_planning/blob/master/pddl/pddl_planner/demos/2011_saito/solve-taking-elevator.l) is incomplete (under the construction), so [taking elevator demo](https://github.com/jsk-ros-pkg/jsk_planning/blob/master/pddl/pddl_planner/demos/2011_saito/demo-taking-elevator.launch) does not work.