pundit: convert moderation reports to pundit.

app/models/forum_post.rb

@@ -81,10 +81,6 @@ class ForumPost < ApplicationRecord
     end
   end
 
-  def reportable_by?(user)
-    visible?(user) && creator_id != user.id && !creator.is_moderator?
-  end
-
   def votable?
     bulk_update_request.present? && bulk_update_request.is_pending?
   end
@@ -99,10 +95,6 @@ class ForumPost < ApplicationRecord
     end
   end
 
-  def visible?(user, show_deleted_posts = false)
-    user.is_moderator? || (user.level >= topic.min_level && (show_deleted_posts || !is_deleted?))
-  end
-
   def update_topic_updated_at_on_create
     if topic
       # need to do this to bypass the topic's original post from getting touched