x11: replace its usage by xlibsWrapper directly

Scilab note: the parameters already had pointed to nonexistent dirs
before this set of refactoring. But that config wasn't even used by
default.

pkgs/games/voxelands/default.nix

@@ -1,5 +1,5 @@
 { stdenv, fetchurl, cmake, irrlicht, libpng, bzip2, sqlite
-, libjpeg, libXxf86vm, mesa, openal, libvorbis, x11, pkgconfig }:
+, libjpeg, libXxf86vm, mesa, openal, libvorbis, xlibsWrapper, pkgconfig }:
 
 stdenv.mkDerivation rec {
   name = "voxelands-${version}";
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     cmake irrlicht libpng bzip2 libjpeg sqlite
-    libXxf86vm mesa openal libvorbis x11 pkgconfig
+    libXxf86vm mesa openal libvorbis xlibsWrapper pkgconfig
   ];
 
   meta = with stdenv.lib; {