removed duplicate type:object

borgmatic/config/schema.yaml

@@ -1627,7 +1627,6 @@ properties:
                     USER_KEY in Pushover documentation and code examples.
                 example: hwRwoWsXMBWwgrSecfa9EfPey55WSN
             start:
-                type: object
                 type: object
                 properties:
                     message: