python.pkgs.cerberus11: remove reference after file was moved
python.pkgs.cerberus11: remove reference after file was moved

Fixup for 34715da5dc3fcbfe031bc7b5a8480b55ee60c588, fixes eval.

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