How can I delete my Trash folder?

[greatlander]

I can find no way to delete messages from my Trash folder.  The majority of these messages are "New sign-in activity to your account".  There is no need to keep these messages. 

[eburtonlab]

eBay handles the actual deletion of messages, typically after six months or so.

Just think of your Trash folder as a handy place to store unwanted messages so you can organize your message inbox.

[quiltgeek]

Think of the Trash folder as a place to put messages you simply don't want to deal with any more.

eBay manages your messages, so you don't have permission to erase them.  As stated by the other member, eBay will eventually erase all your Trash folder content (and also any older messages).