nixos/hardware.opengl: don't set LD_LIBRARY_PATH to /run/opengl-drive…

…r[-32] anymore

We patchelf RUNPATH to /run/opengl-driver[-32] in libglvnd, ocl-icd and
vulkan-loader, so `dlopen()` calls in there find driver libraries
without having to rely on a globally-set LD_LIBRARY_PATH.

nixos/modules/hardware/opengl.nix

@@ -145,9 +145,6 @@ in
       )
     ];
 
-    environment.sessionVariables.LD_LIBRARY_PATH =
-      [ "/run/opengl-driver/lib" ] ++ optional cfg.driSupport32Bit "/run/opengl-driver-32/lib";
-
     environment.variables.XDG_DATA_DIRS =
       [ "/run/opengl-driver/share" ] ++ optional cfg.driSupport32Bit "/run/opengl-driver-32/share";