Remove Seq.is-ready method
Remove Seq.is-ready method

The method was added for debug reasons in mid-2015. It's not used
anywhere in core, roast, or docs.

labster/rakudo,tony-o/rakudo,tony-o/rakudo,sjn/rakudo,softmoth/rakudo,softmoth/rakudo,tony-o/rakudo,raydiak/rakudo,lucasbuchala/rakudo,tony-o/rakudo,Gnouc/rakudo,MasterDuke17/rakudo,MasterDuke17/rakudo,nbrown/rakudo,MasterDuke17/rakudo,sjn/rakudo,awwaiid/rakudo,tbrowder/rakudo,salortiz/rakudo,jonathanstowe/rakudo,salortiz/rakudo,tbrowder/rakudo,nbrown/rakudo,lucasbuchala/rakudo,labster/rakudo,awwaiid/rakudo,rakudo/rakudo,MasterDuke17/rakudo,salortiz/rakudo,usev6/rakudo,Gnouc/rakudo,tony-o/rakudo,tbrowder/rakudo,usev6/rakudo,sjn/rakudo,lucasbuchala/rakudo,salortiz/rakudo,jonathanstowe/rakudo,labster/rakudo,Gnouc/rakudo,awwaiid/rakudo,rakudo/rakudo,salortiz/rakudo,lucasbuchala/rakudo,labster/rakudo,labster/rakudo,softmoth/rakudo,raydiak/rakudo,sjn/rakudo,softmoth/rakudo,usev6/rakudo,lucasbuchala/rakudo,labster/rakudo,Gnouc/rakudo,raydiak/rakudo,rakudo/rakudo,Gnouc/rakudo,nbrown/rakudo,usev6/rakudo,tbrowder/rakudo,rakudo/rakudo,usev6/rakudo,Gnouc/rakudo,jonathanstowe/rakudo,tbrowder/rakudo,rakudo/rakudo,softmoth/rakudo,sjn/rakudo,tbrowder/rakudo,awwaiid/rakudo,MasterDuke17/rakudo,jonathanstowe/rakudo,nbrown/rakudo,awwaiid/rakudo,nbrown/rakudo,salortiz/rakudo,jonathanstowe/rakudo,nbrown/rakudo,raydiak/rakudo,rakudo/rakudo,tony-o/rakudo,MasterDuke17/rakudo