Someone got impatient waiting for Ron van Haren to update the EFL and uploaded some of the newer versions to the AUR. They're dups of [Extra] and need to be deleted.
https://aur.archlinux.org/packages/ecore-latest/ https://aur.archlinux.org/packages/eet-latest/ https://aur.archlinux.org/packages/eina-latest/ https://aur.archlinux.org/packages/evas-latest/ https://aur.archlinux.org/packages/evas_generic_loaders-latest/
