SOLR-6471

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1622773 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6471 removing unused logging

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1622781 13f79535-47bb-0310-9956-ffa450edef68