“Line of Duty” creator Jed Mercurio has thrown his fedora in the ring to reboot the “Doctor Who” franchise. Mercurio, a prolific TV writer responsible for shows including Vicky McClure-starrer “Trigger Point” and “Bodyguard,” led by Richard Madden, has submitted his interest via Hat Trick Mercurio, the production company he co-founded with Jimmy Mulville. Last