util,finagle,finatra: Stop Publishing Root Projects
util,finagle,finatra: Stop Publishing Root Projects

Summary: Problem / Solution

The root projects for `util`, `finagle`, and `finatra` are currently
being published to Maven Central. This change disables publishing for
those root projects.

JIRA Issues: CSL-4730

Differential Revision: https://phabricator.twitter.biz/D82506

twitter/util,twitter/util,twitter/util