LUCENE-5714: Remove unused private constants in BBoxStrategy

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1608988 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6183: AbstractSpatialFieldType: refactor getValueSourceFromSpatialArgs out of getQueryFromSpatialArgs

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1608991 13f79535-47bb-0310-9956-ffa450edef68