Make checkstyle happy

'METHOD_DEF' has more than 1 empty lines before

kafka/src/main/java/io/micronaut/configuration/kafka/intercept/KafkaClientIntroductionAdvice.java

@@ -507,7 +507,6 @@ private MessagingClientException wrapException(MethodInvocationContext<Object, O
                 headers));
     }
 
-
     @SuppressWarnings("unchecked")
     private ProducerState getProducer(MethodInvocationContext<?, ?> context) {
         ProducerKey key = new ProducerKey(context.getTarget(), context.getExecutableMethod());