delete /tpa hierarchy
it seems like the /tpa
hierarchy overlaps with the /tpo/tpa
project where issues have been imported. i think the group and its subprojects should be deleted, but i'm not confident enough I won't be destroying anything to do it myself.
it looks like https://gitlab.torproject.org/tpa/unattended_upgrades is the only project with any actual content, which is the unattended_upgrades puppet module repo hiro created a while back.
so i'm going to /assign @hiro here and hope she finds the time to review this and approve! :)