Going through the list of recently migrated questions (10k), some of these really need some editing or other moderation.

What you see quite often on those questions are comments like:

• not seeing how this is a ServerFault question. – ceejayoz 1 hour ago
• Which forum should I move this to? StackOverflow? – Mark Lutton 1 hour ago
• It has even less to do with StackOverflow. – ceejayoz 41 mins ago

Now that the question is migrated, they don't serve any purpose and distract from the actual problem.

Should I flag for moderator attention to have those deleted?

If so, how should I do it? A comment flag, specifying the "Other…" option? A normal flag on the question itself?