Going Green !! Maybe?
Everyone's going paperless a lot more today (save the trees, ink, etc.) so maybe they figure you save your script to a text file and carry it with you anywhere to read/review using the newest gadgets (smartphone, tablets, and so on) so no need for the hard copy of your scripts. )
Printed code isn't terribly useful. You can't execute it. Most places I've worked would prohibit you taking it out of the building. I can see why they wouldn't want to eat up valuable menu real estate with it.