hseara [1] filed a deletion request for gromacs-2019-complete-charmm36 [2]:
This package is now a rather outdated version. People had enough time to update themselves to the latest version. Please delete. [1] https://aur.archlinux.org/account/hseara/ [2] https://aur.archlinux.org/pkgbase/gromacs-2019-complete-charmm36/