[aur-general] Merge request for [last.fm]

Please merge last.fm[1] into lastfm[2]. Both packages provide the same tool. The last.fm package is unmaintained and its PKGBUILD file is a mess. [1] https://aur.archlinux.org/packages/last.fm/ [2] https://aur.archlinux.org/packages/lastfm/