MarsSeed [1] filed a deletion request for tvdb3_api-git [2]: Orphaned duplicate of python-tvdb_api-git with a wrong name. The latter is properly maintained so this package is not needed. There are no votes or comments so a simple AUR deletion is recommended.
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/tvdb3_api-git/