lib/snoo/subreddits.rb
def remove_moderator container, user, subreddit
      unfriend_wrapper container: container, name: user, r: subreddit, type: "moderator"
    end
def remove_moderator container, user, subreddit
      unfriend_wrapper container: container, name: user, r: subreddit, type: "moderator"
    end
Remove a moderator from a subreddit

 @param (see #add_moderator)
 @return (see #clear_sessions)