NX-364: Remove enunciate, step1

Removes enunciate profile (doco generation)
and enunciate.xml files (triggering the profile)
and dependencies in general, except from restlet1x
plugin.

Enunciate specific annotations are NOT removed,
Java sources untouched yet.

Issue
https://issues.sonatype.org/browse/NX-364

CI
http://bamboo.s/browse/NX-OSSF8