Vaadin 7.3.4 Unused jar in the All-in-one package

Vaadin 6 / 7 / 8
1

I have downloaded Vaadin 7 All-in-one discribution: https://vaadin.com/downloading?package=release/7.3/7.3.4/vaadin-all-7.3.4.zip and analized one with tattletale-1.1.2.Final (http://tattletale.jboss.org/). As the result I got that the following jars are unused:
apache-mime4j-0.6.jar
jetty-annotations-8.1.12.v20130726.jar
swing-worker-1.1.jar

Any comments?

Thanks in advanced,
AnatolyS