nox: remove pythonPackages references

pkgs/tools/package-management/nox/default.nix

···
-{ lib, pythonPackages, fetchurl, git }:
+{ lib, python3Packages, fetchurl, git }:
 
-pythonPackages.buildPythonApplication rec {
+python3Packages.buildPythonApplication rec {
   name = "nox-${version}";
   version = "0.0.6";
   namePrefix = "";
···
 
   patches = [ ./nox-review-wip.patch ];
 
-  buildInputs = [ pythonPackages.pbr git ];
+  buildInputs = [ python3Packages.pbr git ];
 
-  propagatedBuildInputs = with pythonPackages; [
+  propagatedBuildInputs = with python3Packages; [
       dogpile_cache
       click
       requests

pkgs/top-level/all-packages.nix

···
 
   notify-osd = callPackage ../applications/misc/notify-osd { };
 
-  nox = callPackage ../tools/package-management/nox {
-    pythonPackages = python3Packages;
-  };
+  nox = callPackage ../tools/package-management/nox { };
 
   nq = callPackage ../tools/system/nq { };