reactor: remove debug output in command line option validation
reactor: remove debug output in command line option validation

kjniemi/seastar,syuu1228/seastar,syuu1228/seastar,scylladb/scylla-seastar,avikivity/seastar,scylladb/scylla-seastar,dreamsxin/seastar,scylladb/seastar,scylladb/seastar,kjniemi/seastar,avikivity/seastar,kjniemi/seastar,sjperkins/seastar,cloudius-systems/seastar,scylladb/scylla-seastar,sjperkins/seastar,cloudius-systems/seastar,cloudius-systems/seastar,scylladb/seastar,dreamsxin/seastar,dreamsxin/seastar,syuu1228/seastar,sjperkins/seastar,avikivity/seastar