kiji-poms: POM-41. Remove circular dependency on Kiji projects in root pom.

issue: https://jira.kiji.org/browse/POM-41
review: https://review.kiji.org/r/2014
commit: https://github.com/kijiproject/kiji-poms/commit/2725c63536497f750118a88fbf062dca3afcaec3