levinit [1] filed a deletion request for gimp-script-smart-remove [2]:

it had be superceded by 'gimp-resynth-git' package, which contains this toolcontainsgimp-plugin-resynthesizer and this aur is too old ,the download link is broken.

[1] https://aur.archlinux.org/account/levinit/ [2] https://aur.archlinux.org/pkgbase/gimp-script-smart-remove/