Sometimes, and against our warnings and disclaimers, our users still send a password in a ticket. 

Is there any way to delete that thread/comment within the ticket, which contains the secure data? 

Currently, we are forced to inform the user of it, and actually delete the ticket from the system altogether. That can skew reporting numbers, and remove historical information from the ticket that can be useful in the future, neither those situations are desirable.

Any suggestions?

Thanks,