If it comes up, you might mention it. I don't think you need to decide in advance that you're no longer a stutter and don't need to tell anyone ever _or_ you're still a stutterer and need to tell everyone all the time. So, if there's a situation where you stutter, or you feel like it's relevant to inform someone that you might stutter... well, then you could mention it in those situations. There are no rules for stutterers saying you have to disclose all the time. ;)