Merge pull request #1274 in BA/design from ~HZZZ/design:REPORT-4611 to release/9.0

* commit '0e646e2c5bfb51f24f76e9119eae6acc54213a66':
  复选框树样式

designer_base/src/com/fr/design/gui/itree/checkboxtree/NullTristateCheckBox.java

@@ -65,7 +65,6 @@ public class NullTristateCheckBox extends TristateCheckBox {
 
 //    @Override
     public void updateUI() {
-        super.updateUI();
         clearAttribute();
     }