Remove obsolete memberships logic in `user_show` endpoint
Remove obsolete memberships logic in `user_show` endpoint

lukasjuhrich/pycroft,agdsn/pycroft,agdsn/pycroft,lukasjuhrich/pycroft,lukasjuhrich/pycroft,agdsn/pycroft,lukasjuhrich/pycroft,agdsn/pycroft,agdsn/pycroft