debianutils: mark no longer broken on darwin

pkgs/tools/misc/debianutils/default.nix

@@ -20,6 +20,5 @@ stdenv.mkDerivation rec {
     license = with licenses; [ gpl2Plus publicDomain smail ];
     maintainers = [];
     platforms = platforms.all;
-    broken = stdenv.isDarwin;
   };
 }