[PRQ#57034] Deletion Request for perl6-base64

MarsSeed [1] filed a deletion request for perl6-base64 [2]: No longer needed; Perl6 is now Raku. A hundred or so perl6- packages have already been deleted, rightfully, by @serebit. (Almost all of them were abandonware from 2017 and the majority of them had issues.) I have updated this package last year just out of curiosity, but then I realized that new 'raku-' packages need to be created. Or else, users can install rakudo / zef tools from AUR and use it to download, build and install Raku modules easily into their home dir. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/perl6-base64/