Remove duplicate registration of service

If the serviceName does not contain ":" this leads to duplicate
registration of firehose with same name

indexing-service/src/main/java/io/druid/indexing/common/index/EventReceiverFirehoseFactory.java

@@ -86,7 +86,6 @@ public class EventReceiverFirehoseFactory implements FirehoseFactory
     if (chatHandlerProvider.isPresent()) {
       log.info("Found chathandler of class[%s]", chatHandlerProvider.get().getClass().getName());
       chatHandlerProvider.get().register(serviceName, firehose);
-      chatHandlerProvider.get().register(serviceName.replaceAll(".*:", ""), firehose); // rofl
     } else {
       log.info("No chathandler detected");
     }