PRFL-856 remove ehcache specific code

git-svn-id: https://source.sakaiproject.org/svn/profile2/trunk@309155 66ffb92e-73f9-0310-93c1-f5514f145a0a
PRFL-766 remove content producer

git-svn-id: https://source.sakaiproject.org/svn/profile2/trunk@309156 66ffb92e-73f9-0310-93c1-f5514f145a0a
NOJIRA pom cleanup

git-svn-id: https://source.sakaiproject.org/svn/profile2/trunk@309157 66ffb92e-73f9-0310-93c1-f5514f145a0a