How Do You Delete Sent Messages?

Hi. How does one delete a sent message when using the Messaging plugin?

When I go to the Sent Messages folder, I only have View as a choice under Actions.

Looking in messaging.php, I see a function called messaging_remove_sent_message , but I'm not sure if that's what I need nor what change I'd have to make to use it.

I'd greatly appreciate any guidance on this. Thanks!