GEODE-6733 remove unused import and make spotless happay

Authored-by: Robert Houghton <rhoughton@pivotal.io>

Apache Geode v1.6.0 release

Release candidate 1 for 1.6.0

Apache Geode v1.5.0 release

Release candidate 2 for 1.5.0

Release candidate 1 for 1.5.0

Apache Geode v1.4.0 release

Release candidate 2 for 1.4.0

Release candidate 1 for 1.4.0

Apache Geode v1.3.0 release