ccnl: don't include transceiver and defaulttransceiver

This removes the duplicate include of the transceiver.
The transceiver module is a dependency of the
defaulttransceiver, so an explicite include is not needed

Follow up to #1053
Merge pull request #1082 from mehlis/ccnl-relay-transceiver-dup

ccnl: don't include transceiver and defaulttransceiver