Remove unnecessary const_cast
Remove unnecessary const_cast

Signed-off-by: Julian Fleischer <354106e416911844661e1603d99ecf7d1c318dda@thirdhash.com>

chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin