Quicktext | Need help removing existing attribution line in a reply message

I have the following set up as my “Reply” template in Quicktext:

Dear [[TO=firstname]],


[[TO=fullname]] <[[TO=email]]> [[[SCRIPT=DateTime]]]:

The last line is supposed to be the attribution line (“On [date], [person] wrote”), formatted the way I’d like it to be. But since there is already an attribution line, I have to manually delete the pre-existing one. Is there any way that I can remove the pre-existing attribution line using Quicktext?

~ sol