Three copies of same-named attribute in generated spring-boot.json file

In main branch:

This is in generated core/camel-spring-boot/src/main/docs/spring-boot.json:

```

{ "name": "management.endpoint.camelroutes.enabled", "type": "java.lang.Boolean", "description": "To turn on or off information about Camel Routes via actuator endpoint.", "defaultValue": true }

,

{ "name": "management.endpoint.camelroutes.enabled", "type": "java.lang.Boolean", "description": "Whether to enable the camelroutes endpoint.", "sourceType": "org.apache.camel.spring.boot.actuate.endpoint.CamelRoutesEndpoint", "defaultValue": true }

,

{ "name": "management.endpoint.camelroutes.enabled", "type": "java.lang.Boolean", "sourceType": "org.apache.camel.spring.boot.actuate.endpoint.CamelRoutesEndpointProperties", "defaultValue": false }

,
```

Three versions of the same property doesn't make sense.