Use scalarType.format(value) removing scalarType.jsonMapper(value)

Remove scalarType.jsonMapper(value) as we can just use format(value) instead

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

@@ -35,7 +35,7 @@ public class BeanPropertyJsonMapper extends BeanProperty {
   @Override
   boolean isDirtyValue(Object value, EntityBeanIntercept ebi) {
     // dirty detection based on md5 hash of json content
-    final String json = scalarType.jsonMapper(value);
+    final String json = scalarType.format(value);
     final MutableHash oldHash = ebi.mutableHash(propertyIndex);
     if (oldHash == null || !oldHash.isEqualToJson(json)) {
       ebi.mutableContent(propertyIndex, json); // so we only convert to json once

ebean-core/src/main/java/io/ebeaninternal/server/type/ScalarTypeJsonObjectMapper.java

@@ -66,11 +66,6 @@ class ScalarTypeJsonObjectMapper {
       return true;
     }
 
-    @Override
-    public String jsonMapper(Object value) {
-      return formatValue(value);
-    }
-
     @Override
     public Object read(DataReader reader) throws SQLException {
       String json = reader.getString();