Problem: We have workaround code that is no longer necessary

When we corrected the problem with our own links-file, the workaround of creating directories in .../collects became unnecessary.

Solution: Remove the workaround.

racket2nix

@@ -106,26 +106,6 @@ stdenv.mkDerivation rec {
     # install and link us
     if ${racket-cmd} -e "(require pkg/lib) (exit (if (member \"$name\" (installed-pkg-names #:scope (bytes->path (string->bytes/utf-8 \"${_racket-lib.out}/share/racket/pkgs\")))) 1 0))"; then
       ${raco} pkg install --no-setup --copy --deps fail --fail-fast --scope installation ./$name
-      collection_name=$(${racket-cmd} -e "(require setup/getinfo) ((get-info/full \"$name\") 'collection)")
-      (
-        shopt -s nullglob
-        case "$collection_name" in
-          "'multi")
-            collection_names=$(for collection_path in $out/share/racket/pkgs/$name/*/; do
-                                 basename $collection_path; done)
-            ;;
-          "'use-pkg-name")
-            collection_names=$name
-            ;;
-          '"'*'"')
-            collection_names=$(echo $collection_name | tr -d '"')
-            ;;
-          *)
-            echo >&2 "Unexpected info.rkt value: ('collection . $collection_name)"
-            exit 2
-        esac
-        mkdir -p $(printf "$out/share/racket/collects/%s " $collection_names)
-      )
       ${raco} setup --no-user --no-pkg-deps --fail-fast --only --pkgs $name
     fi
     find $out/share/racket/collects -lname '${_racket-lib.out}/share/racket/collects/*' -delete