Adding final updates to dashboard analytics feature

components/device-mgt/org.wso2.carbon.device.mgt.analytics.dashboard/src/main/java/org/wso2/carbon/device/mgt/analytics/dashboard/dao/GadgetDataServiceDAOFactory.java

@@ -90,11 +90,7 @@ public class GadgetDataServiceDAOFactory {
                 "this particular thread. Therefore, calling 'beginTransaction/openConnection' while another " +
                     "transaction is already active is a sign of improper transaction handling.");
         }
-        try {
+        conn = dataSource.getConnection();
-            conn = dataSource.getConnection();
-        } catch (SQLException e) {
-
-        }
         currentConnection.set(conn);
     }