krakn [1] filed a deletion request for firefox-extension-remove-
google-search-redirects [2]:

Broken for ~2 years.

Another one I don't think will be missed.

[1] https://aur.archlinux.org/account/krakn/
[2] https://aur.archlinux.org/pkgbase/firefox-extension-remove-google-search-redirects/