Update training.md
Update training.md

removed information on cut-off dates
neicnordic/neic.no,neicnordic/neic.no,neicnordic/experimental.neic.nordforsk.org,neicnordic/experimental.neic.nordforsk.org,neicnordic/neic.no,neicnordic/experimental.neic.nordforsk.org