remove post keeper references

app/models/post.rb

@@ -59,31 +59,8 @@ class Post < ApplicationRecord
   has_many :favorites
   has_many :replacements, class_name: "PostReplacement", :dependent => :destroy
 
-  serialize :keeper_data, JSON
   attr_accessor :old_tag_string, :old_parent_id, :old_source, :old_rating, :has_constraints, :disable_versioning, :view_count
 
-  concerning :KeeperMethods do
-    included do
-      before_create :initialize_keeper
-    end
-
-    def keeper_id
-      if PostKeeperManager.enabled?
-        (keeper_data && keeper_data["uid"]) ? keeper_data["uid"] : uploader_id
-      else
-        uploader_id
-      end
-    end
-  
-    def keeper
-      User.find(keeper_id)
-    end
-
-    def initialize_keeper
-      self.keeper_data = {uid: uploader_id}
-    end
-  end
-
   if PostArchive.enabled?
     has_many :versions, -> { Rails.env.test? ? order("post_versions.updated_at ASC, post_versions.id ASC") : order("post_versions.updated_at ASC") }, :class_name => "PostArchive", :dependent => :destroy
   end
@@ -620,14 +597,6 @@ class Post < ApplicationRecord
       if decrement_tags.any?
         Tag.decrement_post_counts(decrement_tags)
       end
-
-      if PostKeeperManager.enabled? && persisted?
-        # no need to do this check on the initial create
-        PostKeeperManager.check_and_assign(self, CurrentUser.id, increment_tags)
-
-        # run this again async to check for race conditions
-        PostKeeperManager.queue_check(id, CurrentUser.id)
-      end
     end
 
     def set_tag_count(category,tagcount)