Update H2GIS.java

Author: ebocher

data/h2gis/src/main/java/org/orbisgis/data/H2GIS.java

@@ -501,7 +501,7 @@ public Object asType(Class<?> clazz) {
      * Delete the H2GIS database file
      * @return
      */
-    void deleteClose() throws Exception {
+    public void deleteClose() throws Exception {
         try {
             execute("drop all objects delete files");
             close();