删除部分多余代码，API等级改为由用户设置

designer_chart/src/com/fr/design/chart/fun/impl/AbstractIndependentChartUI4Custom.java

@@ -82,9 +82,4 @@ public abstract class AbstractIndependentChartUI4Custom implements IndependentCh
         return getPlotTypePane().title4PopupWindow();
     }
 
-    @Override
-    public int currentAPILevel() {
-        return CURRENT_API_LEVEL;
-    }
-
 }