String length validation tidy up

ebean-api/src/main/java/io/ebean/config/DatabaseConfig.java

@@ -546,6 +546,7 @@ public class DatabaseConfig implements DatabaseBuilder.Settings {
   private String dumpMetricsOptions;
 
   private LengthCheck lengthCheck = LengthCheck.OFF;
+
   private Function<String, String> metricNaming = MetricNamingMatch.INSTANCE;
 
   /**

ebean-core/src/main/java/io/ebeaninternal/server/deploy/BeanProperty.java

@@ -8,13 +8,10 @@ import io.ebean.bean.EntityBeanIntercept;
 import io.ebean.bean.MutableValueInfo;
 import io.ebean.bean.PersistenceContext;
 import io.ebean.config.EncryptKey;
-import io.ebean.config.LengthCheck;
 import io.ebean.config.dbplatform.DbEncryptFunction;
 import io.ebean.config.dbplatform.DbPlatformType;
-import io.ebean.config.dbplatform.ExtraDbTypes;
 import io.ebean.core.type.DataReader;
 import io.ebean.core.type.DocPropertyType;
-import io.ebean.core.type.InputStreamInfo;
 import io.ebean.core.type.ScalarType;
 import io.ebean.plugin.Property;
 import io.ebean.text.StringParser;
@@ -50,7 +47,6 @@ import java.io.DataInput;
 import java.io.DataOutput;
 import java.io.IOException;
 import java.lang.reflect.Field;
-import java.nio.charset.StandardCharsets;
 import java.sql.SQLException;
 import java.sql.Types;
 import java.util.List;

ebean-test/src/test/java/org/tests/json/TestDbJsonLength.java

@@ -11,7 +11,7 @@ import java.util.Map;
 class TestDbJsonLength {
 
 
-    /**
+  /**
    * The property 'EBasicJsonMap.content' is annotated with @DbJson(length=5000). So we assume, that we cannot save Json-objects
    * where the serialized form exceed that limit and we would expect an error on save.
    * The length check works for platforms like h2, as H2 uses a 'varchar(5000)'. So it is impossible to save such long jsons,