OZG-7573 OZG-7991 Remove comment

ozgcloud-common-lib/src/main/java/de/ozgcloud/common/binaryfile/StreamExclusiveFileSender.java

@@ -48,7 +48,6 @@ class StreamExclusiveFileSender<Q, S> extends StreamingFileSender<Q, S> {
 	public StreamExclusiveFileSender<Q, S> send() {
 		LOG.debug("Start sending File.");
 
-		// this responseObserver registers also onReadyHandler
 		var responseObserver = BinaryFileUploadStreamObserver.create(getResultFuture(), this::sendNext);
 		requestObserver = reqObserverBuilder.apply(responseObserver);