WFLY-1716 Remove outdated references to JBoss EL library

The commit here removes references to the outdated usage of JBoss EL library which causes deployment failures as reported in https://issues.jboss.org/browse/WFLY-1716. Recently (http://lists.jboss.org/pipermail/jboss-as7-dev/2013-April/008133.html), WildFly uses the EL RI implementation and no longer uses JBoss EL library.

P.S: One of the DUPs that's removed in this commit was specifically a fix for a performance issue in JBoss EL https://issues.jboss.org/browse/AS7-5026. We'll have to check if we have a similar problem in the RI and if yes, then come up with an equivalent fix. I'll talk to Stuart about that and address it separately outside of this PR.