Removed unused ostatus, activitypub actions from service code

• Removed:
- unused ostatus, activitypub actions from service code

app/services/unfollow_service.rb

@@ -19,8 +19,6 @@ class UnfollowService < BaseService
     return unless follow
 
     follow.destroy!
-    create_notification(follow) unless @target_account.local?
-    create_reject_notification(follow) if @target_account.local? && !@source_account.local?
     UnmergeWorker.perform_async(@target_account.id, @source_account.id)
     follow
   end
@@ -31,41 +29,7 @@ class UnfollowService < BaseService
     return unless follow_request
 
     follow_request.destroy!
-    create_notification(follow_request) unless @target_account.local?
     follow_request
   end
 
-  def create_notification(follow)
-    if follow.target_account.ostatus?
-      NotificationWorker.perform_async(build_xml(follow), follow.account_id, follow.target_account_id)
-    elsif follow.target_account.activitypub?
-      ActivityPub::DeliveryWorker.perform_async(build_json(follow), follow.account_id, follow.target_account.inbox_url)
-    end
-  end
-
-  def create_reject_notification(follow)
-    # Rejecting an already-existing follow request
-    return unless follow.account.activitypub?
-    ActivityPub::DeliveryWorker.perform_async(build_reject_json(follow), follow.target_account_id, follow.account.inbox_url)
-  end
-
-  def build_json(follow)
-    ActiveModelSerializers::SerializableResource.new(
-      follow,
-      serializer: ActivityPub::UndoFollowSerializer,
-      adapter: ActivityPub::Adapter
-    ).to_json
-  end
-
-  def build_reject_json(follow)
-    ActiveModelSerializers::SerializableResource.new(
-      follow,
-      serializer: ActivityPub::RejectFollowSerializer,
-      adapter: ActivityPub::Adapter
-    ).to_json
-  end
-
-  def build_xml(follow)
-    OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.unfollow_salmon(follow))
-  end
 end