discord has no option to delete a private person's message

I ask you to make a system that excludes a quick and effective message from a private conversation with people like on whatsap it has to improve every day more disagreement so as not to get your groups full of messages you just have to delete one by default it will take an iternity had to signal them to exclude all of them in a way which private message you talk to I hope that this will improve quickly years of disagreement and does not have this function thanks