python3Packages.nox: Remove optional dependencies from testing

This reduces closure size and none of the optional dependencies seem to be critical for testing.

pkgs/development/python-modules/nox/default.nix

@@ -50,7 +50,7 @@ buildPythonPackage rec {
     uv = [ uv ];
   };
 
-  nativeCheckInputs = [ pytestCheckHook ] ++ lib.flatten (builtins.attrValues optional-dependencies);
+  nativeCheckInputs = [ pytestCheckHook ];
 
   preCheck = ''
     export HOME=$(mktemp -d)