[aur-general] Resigning as TU

For a long time I have been inactive in TU matters (i.e.: handling AUR requests, looking into TU applicants, and overseeing community contributions in general). Due to this, I feel it's proper to let go of my TU title. No heartfelt goodbyes, since my involvement in Arch remains unchanged. (On a related note, where did the last 9 years go?!)