fix for: https://issues.apache.org/jira/browse/AMQCPP-441

git-svn-id: https://svn.apache.org/repos/asf/activemq/activemq-cpp/branches/activemq-cpp-3.4.x@1412172 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/activemq-cpp/src/main/activemq/core/ActiveMQConsumer.cpp b/activemq-cpp/src/main/activemq/core/ActiveMQConsumer.cpp
index fade90e..920cdfd 100644
--- a/activemq-cpp/src/main/activemq/core/ActiveMQConsumer.cpp
+++ b/activemq-cpp/src/main/activemq/core/ActiveMQConsumer.cpp
@@ -798,7 +798,6 @@
         } else if( isAutoAcknowledgeBatch() ) {
             ackLater( message, ActiveMQConstants::ACK_TYPE_CONSUMED );
         } else if( session->isClientAcknowledge() || session->isIndividualAcknowledge() ) {
-            ackLater( message, ActiveMQConstants::ACK_TYPE_DELIVERED );
 
             bool messageUnackedByConsumer = false;