Remove leftover TODO comment
Remove leftover TODO comment

The TODO has been done, but the comment was still around, making it seem
like the permissions refactor was still to be done when actually it's
been finished.

sillsdev/web-scriptureforge,sil-student-projects/web-scriptureforge,UpstatePedro/web-languageforge,sillsdev/web-cat,sillsdev/web-scriptureforge,sil-student-projects/web-scriptureforge,ermshiperete/web-languageforge,sil-student-projects/web-languageforge,UpstatePedro/web-languageforge,sil-student-projects/web-scriptureforge,UpstatePedro/web-languageforge,sil-student-projects/web-scriptureforge,sillsdev/web-scriptureforge,sillsdev/web-cat,sil-jterm-2015/sfwebchecks,ermshiperete/web-languageforge,sil-student-projects/web-scriptureforge,sil-student-projects/web-scriptureforge,sil-jterm-2015/sfwebchecks,UpstatePedro/web-languageforge,sil-student-projects/web-languageforge,sil-student-projects/web-languageforge,sillsdev/web-cat,sil-student-projects/web-languageforge,sillsdev/web-scriptureforge,ermshiperete/web-languageforge,sillsdev/web-scriptureforge,sillsdev/web-cat,sil-jterm-2015/sfwebchecks,ermshiperete/web-languageforge,sil-student-projects/web-languageforge,sillsdev/web-cat,UpstatePedro/web-languageforge,sillsdev/web-cat,ermshiperete/web-languageforge,sil-student-projects/web-languageforge,UpstatePedro/web-languageforge,UpstatePedro/web-languageforge,ermshiperete/web-languageforge,sil-student-projects/web-scriptureforge,ermshiperete/web-languageforge,sil-jterm-2015/sfwebchecks,sil-jterm-2015/sfwebchecks,sil-student-projects/web-languageforge,sillsdev/web-scriptureforge,sillsdev/web-cat,sil-student-projects/web-languageforge,sillsdev/web-scriptureforge,ermshiperete/web-languageforge,sillsdev/web-cat,sillsdev/web-scriptureforge,sil-jterm-2015/sfwebchecks