Remove update trigger from the standard example (#357)

Author: asvoboda

config/examples/standard.bulldozer.v1.yml

@@ -13,7 +13,3 @@ merge:
       body: summarize_commits
   delete_after_merge: true
   allow_merge_with_no_checks: false
-
-update:
-  trigger:
-    labels: ["wip", "update me"]