osslsigncode: drop libgsf from buildInputs
osslsigncode: drop libgsf from buildInputs

- not needed anymore, see https://github.com/mtrojnar/osslsigncode/releases/tag/2.2

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