transformers

ed6b8f31 - Update to match renamed attributes in fairseq master (#5972)

Update to match renamed attributes in fairseq master (#5972) * Update to match renamed attributes in fairseq master RobertaModel no longer have model.encoder and args.num_classes attributes as of 5/28/20. * Quality Co-authored-by: Lysandre <lysandre.debut@reseau.eseo.fr>