python2Packages.yolk: drop
python2Packages.yolk: drop

Was introduced in 2016 with only a top-level attribute, which got
removed in the same year, so hasn't been used since.

Also last commit in 2013, uses python2 print statements, so it has to
go.

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs