Update Issue 63

Issue 449
JAIN SIP Repo

Get rid of unused code that is throwing that exception (will get a little perf increase at the same time)
(cherry picked from commit c97a645215e515820c53c42bb270f000d22cc263)

git-svn-id: https://svn.java.net/svn/jsip~svn/trunk@2277 8e71dc83-d81e-6649-80f2-80b843a9b2be
Merge branch 'upstream'