Drop some packages I no longer maintain
Drop some packages I no longer maintain

Fixes #4998

michalkonecny/stackage,spencerjanssen/stackage,athanclark/stackage,asr/stackage,fimad/stackage,clinty/stackage,soenkehahn/stackage,stackbuilders/stackage,mrkkrp/stackage,massysett/stackage,Daniel-Diaz/stackage,fpco/stackage,simonmichael/stackage,iand675/stackage,jonschoning/stackage