More 4.2.5 release notes updates

Author: michaelklishin

release-notes/4.2.5.md

@@ -70,10 +70,7 @@ Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://
 
 #### Enhancements
 
- * Connections from port scanners and other non-RabbitMQ clients to the stream port
-   now produce significantly less log noise: unrecognised pre-auth data is logged at
-   `debug` level instead of `warning`, and incomplete frames no longer trigger spurious
-   state transition warnings.
+ * Less log noise from load balancer and port scanner probes (that do not perform an AMQP 1.0 or AMQP 0-9-1 handshake)
 
    GitHub issue: [#15715](https://github.com/rabbitmq/rabbitmq-server/pull/15715)