removes code on ravendb

Author: otaviojava

ravendb-driver/src/main/java/org/jnosql/diana/ravendb/document/RavenDBDocumentConfiguration.java

@@ -21,9 +21,7 @@
 import org.jnosql.diana.api.document.DocumentConfiguration;
 import org.jnosql.diana.driver.ConfigurationReader;
 
-import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.List;
 import java.util.Map;
 
 import static java.util.Objects.requireNonNull;
@@ -39,8 +37,6 @@ public class RavenDBDocumentConfiguration implements DocumentConfiguration<Raven
 
     private static final String FILE_CONFIGURATION = "diana-ravendb.properties";
 
-    private List<String> hosts = new ArrayList<>();
-
     @Override
     public RavenDBDocumentCollectionManagerFactory get() {
         Map<String, String> configuration = ConfigurationReader.from(FILE_CONFIGURATION);