Fixed cluster ID code comment still mentioning migration (#11979)

Signed-off-by: Paolo Patierno <ppatierno@live.com>

Author: ppatierno

cluster-operator/src/main/java/io/strimzi/operator/cluster/model/KafkaCluster.java

@@ -1883,8 +1883,6 @@ public List<ConfigMap> generatePerBrokerConfigurationConfigMaps(MetricsAndLoggin
                 // script to generate the node configuration.
                 data.put(BROKER_LISTENERS_FILENAME, node.broker() ? listeners.stream().map(ListenersUtils::envVarIdentifier).collect(Collectors.joining(" ")) : null);
 
-                // controller and broker gets the Cluster ID in different states during migration
-                // and they both get it when in full KRaft-mode
                 data.put(BROKER_CLUSTER_ID_FILENAME, clusterId);
                 data.put(BROKER_METADATA_VERSION_FILENAME, metadataVersion);