nixos/kde5: disable setuid wrapper for kdeinit

We need to pass certain environment variables through the wrapper, but I
don't know how to do that yet. The setuid-root feature serves only to
hide kdeinit from the OOM killer, so this is not critical.

nixos/modules/services/x11/desktop-managers/kde5.nix

@@ -54,12 +54,16 @@ in
         owner = "root";
         setuid = true;
       }
+      # ttuegel: Disabled until I can figure out how to propagate the
+      # necessary environment variables.
+      /*
       {
         program = "start_kdeinit_wrapper";
         source = "${kde5.kinit.out}/lib/libexec/kf5/start_kdeinit_wrapper";
         owner = "root";
         setuid = true;
       }
+      */
     ];
 
     environment.systemPackages =