remove copy again and use std::move since read writes using datastream
remove copy again and use std::move since read writes using datastream


Former-commit-id: bd6f4b9fc411d8f68770c76a8c87dd0379e2b146
syscoin/syscoin,syscoin/syscoin2,syscoin/syscoin2,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin2,syscoin/syscoin2,syscoin/syscoin,syscoin/syscoin2,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin2,syscoin/syscoin,syscoin/syscoin