pythonPackages.Babel: remove glibcLocales and don't set LC_ALL

as we already set

    LANG = "${if python.stdenv.isDarwin then "en_US" else "C"}.UTF-8";

in `buildPythonPackage`.

This is related to issue https://github.com/NixOS/nixpkgs/issues/74904

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

@@ -11,14 +11,10 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ pytz ];
 
-  checkInputs = [ pytest freezegun glibcLocales ];
+  checkInputs = [ pytest freezegun ];
 
   doCheck = !stdenv.isDarwin;
 
-  preCheck = ''
-    export LC_ALL="en_US.UTF-8"
-  '';
-
   meta = with lib; {
     homepage = http://babel.edgewall.org;
     description = "A collection of tools for internationalizing Python applications";