aqua: disable cache loading for real ships for now
aqua: disable cache loading for real ships for now

It breaks some of the azimuth-related tests in a seemingly inconsistent
way, and I cannot find a way to make it work.

urbit/urbit,ngzax/urbit,ngzax/urbit,urbit/urbit,ngzax/urbit,ngzax/urbit,urbit/urbit,ngzax/urbit,ngzax/urbit,urbit/urbit,ngzax/urbit,urbit/urbit,urbit/urbit,urbit/urbit