Top Hillary Clinton confidante Huma Abedin played no formal role in a radical Muslim journal — even though she was listed as an editor on the hate-filled periodical’s masthead for a dozen years, a campaign rep claimed Sunday. “My understanding is that her name was simply listed on the masthead in that period,” Clinton spokesman Nick Merrill said hours after The Post broke the bombshell story. “She did not play a role in editing at the publication.”