Remove unneeded flutter.yaml property
diff --git a/examples/address_book/flutter.yaml b/examples/address_book/flutter.yaml
index d2afacf..60833b3 100644
--- a/examples/address_book/flutter.yaml
+++ b/examples/address_book/flutter.yaml
@@ -1,6 +1,5 @@
 name: address_book
 version: 0.0.2
-update-url: http://localhost:9888/examples/address_book/
 material-design-icons:
   - name: av/volume_up
   - name: communication/email