I've deleted all the text within the quote, or are you saying you need to delete the bit where the username shows? I'm using a mobile... Maybe it's different?
I'll try to be as precise as possible
So on a specific thread I was going to reply to massage via the quote/reply function.
The message came up and I started to type a reply, then clicked off the thread.
Now everytime I open the thread I get the quoted message in the place where you type...