fixes #898: removes the unused generic_files#index route
fixes #898: removes the unused generic_files#index route

samvera/hyrax,zhang4952/scholarsphere,samvera/hyrax,samvera/hyrax,ndlib/scholarsphere,samvera/hyrax,jeremyf/sufia,jeremyf/sufia,zhang4952/scholarsphere,zhang4952/scholarsphere,ndlib/scholarsphere,zhang4952/scholarsphere,ndlib/scholarsphere