[DFDL-WG] minor errata? "out-of-band" handling

The spec mentions DFDL has "out-of-band" handling in section 1. A long time ago we dropped out-of-band nil handling from DFDL v1.0. This comment in section 1 feels like it was not excised at that time and should be dropped. -- Mike Beckerle | OGF DFDL WG Co-Chair Tel: 781-330-0412