Looks like your classpath has some jar files which are outdated (i guess belonging to J2EE1.3). Can you post the list of all the jars that you have in your application package?
I recommend, you remove these from that folder. appserv-rt.jar is not for JBoss (i guess, its for Sun App server) and the other 3 jar files are already present in server/default/lib folder and hence are not required to be packaged with your application. After deleting these jar files from your application, restart JBoss and try out the jsp.