You could create WEB-INF/jboss-web.xml file for your application with next content
" rel="nofollow" target="_blank">http://www.jboss.org/j2ee/dtd/jboss-web_4_2.dtd">
This should prevent classloader from looking for JBoss libs. As a downside you'll have to provide all your 3rd-party jars in a WAR/lib folder.
This works for 4.2 you could lookup something similar for version you currently use.