Retire manta from map rotation

[Rilor]

Manta was made by a transphobic asshole according to one of the admins i believe, there are also more problems, such as manta not being designed for having a singularity (it was supposed to have a nuclear engine), how much camera coverage and light is in maint, how EVERY WINDOW is electrified. the general uselessness of torpedo's in most circumstances. (there was supposed to be an event in which they were to be used or bad stuff happened but it was never implemented) and there was an entire lore thing with the vault that was discarded (because they left and asked we purged their work on the reliquary) and no one wants to touch, that and most of the admins don't really like manta's millitary theming