python3Packages.bcrypt: remove dependency on cffi

bcrypt has been rewritten in Rust, so no longer depends on cffi. This also
gets rid of a problematic usage of propagatedNativeBuildInputs.

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

@@ -5,10 +5,8 @@
 , rustc
 , setuptools
 , setuptools-rust
-, isPyPy
 , fetchPypi
 , pythonOlder
-, cffi
 , pytestCheckHook
 , libiconv
 , stdenv
@@ -51,14 +49,6 @@ buildPythonPackage rec {
   # Remove when https://github.com/NixOS/nixpkgs/pull/190093 lands.
   buildInputs = lib.optional stdenv.isDarwin libiconv;
 
-  propagatedBuildInputs = [
-    cffi
-  ];
-
-  propagatedNativeBuildInputs = [
-    cffi
-  ];
-
   nativeCheckInputs = [
     pytestCheckHook
   ];