* Removed (currently) unused interface.

src/main/java/org/openflow/util/IProducerConsumerCache.java

-package org.openflow.util;
-
-/**
- * ProducerConsumer trigger interface
- * 
- * Start consumer cache:
- *   ProducerConsumer.getSingleton ().registerProducer (null, IProducerConsumerCache.class)
- * 
- * Deferred (late)
- *  producer consumer registration:
- *   ProducerConsumer.getSingleton ().registerProducer (IProducer, IProducerConsumerCache.class)
- *
- * End consumer cache:
- *   ProducerConsumer.getSingleton ().deregisterProducer (null, IProducerConsumerCache.class)
- * 
- */
-public interface IProducerConsumerCache {
-
-}