Remove trailing whitespace in files

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=135386752

java/google/registry/dns/DnsQueue.java

@@ -54,7 +54,7 @@ public class DnsQueue {
   @Inject @Config("dnsWriteLockTimeout") Duration writeLockTimeout;
   @Inject @Named(DNS_PULL_QUEUE_NAME) Queue queue;
   @Inject DnsQueue() {}
-  
+
   long writeBatchSize = QueueConstants.maxLeaseCount();
 
   /**