SAK-23907 delete assembly, remove redundant <repository>

git-svn-id: https://source.sakaiproject.org/svn/taggable/trunk@129508 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-23907 update base pom

git-svn-id: https://source.sakaiproject.org/svn/taggable/trunk@129509 66ffb92e-73f9-0310-93c1-f5514f145a0a