Harry Potter and Uncle Vernon’s Bloody Corpse

That’s what I’d like the next Harry Potter book to be titled. I can’t stand the fact that poor Harry has to keep going back to live with those horrible Dursleys at the end of each school year. I’ve only just finished the second book, Harry Potter and the Chamber of Secrets, so if he’s already killed and dismembered the Dursleys in one of the later books, could someone please let me know?