Remove dead code
Remove dead code

Since we have CompUnitRepo objects living in @*INC, I don't see how this could
ever work.  Removal does not seem to break anything at all in spectesting.

softmoth/rakudo,LLFourn/rakudo,Gnouc/rakudo,cygx/rakudo,MasterDuke17/rakudo,tony-o/rakudo,tbrowder/rakudo,tony-o/deb-rakudodaily,nunorc/rakudo,ab5tract/rakudo,Leont/rakudo,tony-o/deb-rakudodaily,tbrowder/rakudo,lucasbuchala/rakudo,skids/rakudo,tony-o/deb-rakudodaily,ugexe/rakudo,zostay/rakudo,sjn/rakudo,b2gills/rakudo,jonathanstowe/rakudo,lucasbuchala/rakudo,usev6/rakudo,azawawi/rakudo,jonathanstowe/rakudo,sergot/rakudo,cygx/rakudo,sjn/rakudo,tony-o/rakudo,softmoth/rakudo,b2gills/rakudo,labster/rakudo,LLFourn/rakudo,cygx/rakudo,usev6/rakudo,jonathanstowe/rakudo,zhuomingliang/rakudo,teodozjan/rakudo,MasterDuke17/rakudo,laben/rakudo,tony-o/deb-rakudodaily,cognominal/rakudo,azawawi/rakudo,azawawi/rakudo,ungrim97/rakudo,usev6/rakudo,ab5tract/rakudo,lucasbuchala/rakudo,dankogai/rakudo,skids/rakudo,Gnouc/rakudo,jonathanstowe/rakudo,tony-o/rakudo,labster/rakudo,azawawi/rakudo,samcv/rakudo,cognominal/rakudo,raydiak/rakudo,rakudo/rakudo,cygx/rakudo,rakudo/rakudo,nbrown/rakudo,tbrowder/rakudo,labster/rakudo,nbrown/rakudo,niner/rakudo,ungrim97/rakudo,sergot/rakudo,sjn/rakudo,ungrim97/rakudo,niner/rakudo,rakudo/rakudo,Gnouc/rakudo,samcv/rakudo,MasterDuke17/rakudo,skids/rakudo,nbrown/rakudo,MasterDuke17/rakudo,labster/rakudo,awwaiid/rakudo,retupmoca/rakudo,zostay/rakudo,teodozjan/rakudo,retupmoca/rakudo,ugexe/rakudo,MasterDuke17/rakudo,zhuomingliang/rakudo,Gnouc/rakudo,usev6/rakudo,tony-o/rakudo,salortiz/rakudo,raydiak/rakudo,awwaiid/rakudo,dankogai/rakudo,nbrown/rakudo,softmoth/rakudo,LLFourn/rakudo,Leont/rakudo,jonathanstowe/rakudo,paultcochrane/rakudo,tbrowder/rakudo,raydiak/rakudo,laben/rakudo,b2gills/rakudo,Gnouc/rakudo,rakudo/rakudo,cygx/rakudo,cognominal/rakudo,ab5tract/rakudo,samcv/rakudo,dankogai/rakudo,softmoth/rakudo,awwaiid/rakudo,Gnouc/rakudo,usev6/rakudo,retupmoca/rakudo,tony-o/rakudo,paultcochrane/rakudo,teodozjan/rakudo,paultcochrane/rakudo,labster/rakudo,sergot/rakudo,skids/rakudo,niner/rakudo,azawawi/rakudo,nunorc/rakudo,skids/rakudo,nunorc/rakudo,ab5tract/rakudo,lucasbuchala/rakudo,teodozjan/rakudo,Leont/rakudo,salortiz/rakudo,cognominal/rakudo,ungrim97/rakudo,rakudo/rakudo,tony-o/rakudo,b2gills/rakudo,lucasbuchala/rakudo,LLFourn/rakudo,softmoth/rakudo,raydiak/rakudo,samcv/rakudo,niner/rakudo,Leont/rakudo,ugexe/rakudo,tony-o/deb-rakudodaily,tony-o/deb-rakudodaily,tbrowder/rakudo,zhuomingliang/rakudo,sjn/rakudo,rakudo/rakudo,salortiz/rakudo,paultcochrane/rakudo,laben/rakudo,sjn/rakudo,MasterDuke17/rakudo,dankogai/rakudo,awwaiid/rakudo,zostay/rakudo,laben/rakudo,cognominal/rakudo,salortiz/rakudo,ugexe/rakudo,salortiz/rakudo,LLFourn/rakudo,ab5tract/rakudo,paultcochrane/rakudo,nunorc/rakudo,zostay/rakudo,samcv/rakudo,nbrown/rakudo,nbrown/rakudo,tony-o/deb-rakudodaily,sergot/rakudo,ugexe/rakudo,salortiz/rakudo,dankogai/rakudo,b2gills/rakudo,awwaiid/rakudo,tbrowder/rakudo,ungrim97/rakudo,labster/rakudo,retupmoca/rakudo,zhuomingliang/rakudo