KB66 Use a MessageLogger for logging.

Change-Id: Ice21e79d23725beb104a3dcf999f5e68960e9435
diff --git a/src/main/java/eu/mulk/mulkcms2/benki/newsletter/NewsletterSubscriptionExpirer.java b/src/main/java/eu/mulk/mulkcms2/benki/newsletter/NewsletterSubscriptionExpirer.java
index a9dda9c..6bc54b8 100644
--- a/src/main/java/eu/mulk/mulkcms2/benki/newsletter/NewsletterSubscriptionExpirer.java
+++ b/src/main/java/eu/mulk/mulkcms2/benki/newsletter/NewsletterSubscriptionExpirer.java
@@ -1,16 +1,14 @@
 package eu.mulk.mulkcms2.benki.newsletter;
 
+import eu.mulk.mulkcms2.common.logging.Messages;
 import io.quarkus.scheduler.Scheduled;
 import java.time.OffsetDateTime;
 import javax.enterprise.context.Dependent;
 import javax.transaction.Transactional;
-import org.jboss.logging.Logger;
 
 @Dependent
 public class NewsletterSubscriptionExpirer {
 
-  private static final Logger log = Logger.getLogger(NewsletterUnsubscriber.class);
-
   @Scheduled(every = "PT1H")
   @Transactional
   void run() {
@@ -18,7 +16,7 @@
         NewsletterSubscription.delete(
             "registrationKey IS NOT NULL AND startDate < ?1", OffsetDateTime.now().minusWeeks(1));
     if (subscriptionsDeleted > 0) {
-      log.infof("%d expired newsletter subscriptions deleted.", subscriptionsDeleted);
+      Messages.log.expiredSubscriptionsDeleted(subscriptionsDeleted);
     }
   }
 }