add deadnix to formatter

templates/python-project/default.nix

@@ -42,7 +42,7 @@ let
     passthru.devDependencies = devDependencies;
   };
 
-  checkPython = python3.withPackages (ps: devDependencies ++ dependencies);
+  checkPython = python3.withPackages (_ps: devDependencies ++ dependencies);
 
   check = runCommand "${name}-check" { } ''
     cp -r ${src} ./src

templates/python-project/flake-module.nix

@@ -1,8 +1,6 @@
 {
   perSystem = { pkgs, ... }:
     let
-      pyproject = builtins.fromTOML (builtins.readFile ./pyproject.toml);
-      name = pyproject.project.name;
       package = pkgs.callPackage ./default.nix { };
     in
     {

templates/python-project/shell.nix

@@ -1,5 +1,4 @@
 { pkgs ? import <nixpkgs> { }
-, system ? builtins.currentSystem
 ,
 }:
 let