Removed unused ostatus, activitypub actions from service code

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

app/services/after_block_domain_from_account_service.rb

@@ -28,15 +28,5 @@ class AfterBlockDomainFromAccountService < BaseService
 
   def reject_follow!(follow)
     follow.destroy
-
-    return unless follow.account.activitypub?
-
-    json = ActiveModelSerializers::SerializableResource.new(
-      follow,
-      serializer: ActivityPub::RejectFollowSerializer,
-      adapter: ActivityPub::Adapter
-    ).to_json
-
-    ActivityPub::DeliveryWorker.perform_async(json, @account.id, follow.account.inbox_url)
   end
 end