Refs #100657 Remove code duplicating ccn_is_final_block() which is now in library.
Refs #100657 Remove code duplicating ccn_is_final_block() which is now in library.

cawka/ndnx,svartika/ccnx,cawka/ndnx,svartika/ccnx,svartika/ccnx,svartika/ccnx,ebollens/ccnmp,ebollens/ccnmp,cawka/ndnx,cawka/ndnx,svartika/ccnx,svartika/ccnx,ebollens/ccnmp,ebollens/ccnmp,svartika/ccnx,cawka/ndnx