[PRQ#45357] Deletion Request for manga-downloader-git

MarsSeed [1] filed a deletion request for manga-downloader-git [2]: Orphan, broken VCS package from 2019. Though the project is kept alive, it is not trivial to fix the problems on AUR, because the also-orphaned python-pyexecjs is broken too, and is EOL since 2018. [a] Without a maintainer for either packages on AUR, users have better chances with installing the latest version of this from PyPI. [a]: https://github.com/doloopwhile/PyExecJS [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/manga-downloader-git/