feat(consumer) removed poll generic messages

Author: duhenglucky

openmessaging-api/src/main/java/io/openmessaging/api/PullConsumer.java

@@ -69,15 +69,6 @@ interface TopicPartitionChangeListener {
      */
     List<Message> poll(long timeout);
 
-    /**
-     * Fetch Objects for the topics or partitions specified using assign API. It is an error to not have subscribed to
-     * any topics or partitions before polling for data.
-     *
-     * @param timeout in millisecond
-     * @return
-     */
-    <T> List<GenericMessage<T>> pollGenericMessages(long timeout);
-
     /**
      * Overrides the fetch offsets that the consumer will use on the next {@link #poll(long)} }. If this API is invoked
      * for the same message queue more than once, the latest offset will be used on the next poll(). Note that you may