fix: remove xero-webhook.yaml schema fix (needs to be done on master)

Author: rpocklin

xero-webhooks.yaml

@@ -163,4 +163,4 @@ components:
                 "lastEventSequence": 1,
                 "firstEventSequence": 1,
                 "entropy": "S0m3r4Nd0mt3xt"
-              }
+              }