hosts/db-pg17, roles/dbserver-postgresql: remove ansibleLibPackage opt

hosts/db-pg17/default.nix

@@ -14,7 +14,6 @@
 
   dbserver-postgresql = {
     enable = true;
-    ansibleLibPackage = pkgs.python312Packages.psycopg2;
   };
 
   base.userSSHKeys = [

roles/dbserver-postgresql.nix

@@ -24,19 +24,11 @@ in
       description = "Package to use for the database server";
       example = postgresql;
     };
-
-    ansibleLibPackage = mkOption {
-      type = types.package;
-      default = defaultPsycopg2Package;
-      description = "Python library to use for Ansible interfacing";
-      example = pkgs.python313Packages.psycopg2;
-    };
   };
 
   config = mkIf cfg.enable {
     environment.systemPackages = with pkgs; [
       cfg.dbPackage
-      cfg.ansibleLibPackage
       (python3.withPackages (ps: with ps; [ psycopg2 ]))
     ];