Revert "NIFI-1218 addressed PR comments"

This reverts commit 7c87968260.

nifi-nar-bundles/nifi-kafka-bundle/nifi-kafka-processors/src/test/java/org/apache/nifi/processors/kafka/TestPutKafka.java

@@ -474,17 +474,18 @@ public class TestPutKafka {
 
         @Override
         public void close() {
-            // not part of the test; ignoring
         }
 
         @Override
         public void close(long arg0, TimeUnit arg1) {
-            // not part of the test; ignoring
+            // TODO Auto-generated method stub
+
         }
 
         @Override
         public void flush() {
-            // not part of the test; ignoring
+            // TODO Auto-generated method stub
+
         }
     }