Reorg github teams

[jcklpe]

https://github.com/orgs/open-austin/teams

[lianilychee]

Doing one of my regular small cleans. Looking at the link, I think we can delete everything minus the landlord mapper group, since that's the only active product team on that list. Do you think so too?

LMK, and I'll go through these steps https://docs.github.com/en/organizations/organizing-members-into-teams/deleting-a-team