use SQL delete for removing AppData associated with device. it could be huge, skip hibernate layer

bubble-server/src/main/java/bubble/dao/app/AppDataDAO.java

@@ -86,8 +86,8 @@ public class AppDataDAO extends AppTemplateEntityDAO<AppData> {
         return list(criteria().add(and(crits.toArray(new Criterion[0]))));
     }
 
-    protected List<AppData> findByDevice(String uuid) { return findByField("device", uuid); }
-
-    public void deleteDevice(String uuid) { delete(findByDevice(uuid)); }
+    public void deleteDevice(String uuid) {
+        getConfiguration().execSql("DELETE FROM app_data WHERE device = ?", new Object[] {uuid});
+    }
 
 }