Introduced 2 method, one for retained and not

broker/src/main/java/io/moquette/spi/impl/PersistentQueueMessageSender.java

@@ -1,6 +1,5 @@
 package io.moquette.spi.impl;
 
-import io.moquette.parser.proto.messages.AbstractMessage;
 import io.moquette.parser.proto.messages.PublishMessage;
 import io.moquette.server.ConnectionDescriptor;
 import io.moquette.spi.ClientSession;
@@ -8,7 +7,6 @@ import io.netty.channel.Channel;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.nio.ByteBuffer;
 import java.util.concurrent.ConcurrentMap;
 
 import static io.moquette.parser.proto.messages.AbstractMessage.QOSType.MOST_ONE;
@@ -53,14 +51,4 @@ class PersistentQueueMessageSender {
             clientsession.enqueue(pubMessage);
         }
     }
-
-    static PublishMessage createPublishForQos(String topic, AbstractMessage.QOSType qos, ByteBuffer message) {
-        PublishMessage pubMessage = new PublishMessage();
-        pubMessage.setRetainFlag(false);
-        pubMessage.setTopicName(topic);
-        pubMessage.setQos(qos);
-        pubMessage.setPayload(message);
-        return pubMessage;
-    }
-
 }