Remove privacy enum from Post class. Handled in Privacy concern

Author: rsmithlal

app/models/better_together/post.rb

@@ -3,11 +3,6 @@
 module BetterTogether
   # Represents a blog post
   class Post < ApplicationRecord
-    PRIVACY_LEVELS = {
-      private: 'private',
-      public: 'public'
-    }.freeze
-
     include Authorable
     include FriendlySlug
     include Categorizable
@@ -22,9 +17,6 @@ class Post < ApplicationRecord
 
     slugged :title
 
-    enum post_privacy: PRIVACY_LEVELS,
-         _prefix: :post_privacy
-
     validates :title,
               presence: true