Revert "idris: Move library setup to the setup hook."

This reverts commit 69d4adee1f.

pkgs/development/idris-modules/idris-wrapper.nix

@@ -10,8 +10,5 @@ symlinkJoin {
     wrapProgram $out/bin/idris \
       --suffix PATH : ${ stdenv.lib.makeBinPath path } \
       --suffix LIBRARY_PATH : ${stdenv.lib.makeLibraryPath lib}
-
-    mkdir -p $out/nix-support
-    substituteAll ${./setup-hook.sh} $out/nix-support/setup-hook
       '';
   }