diff --git a/demo_r2/mainwindow.ui b/demo_r2/mainwindow.ui
index 8475814..75c02b0 100644
--- a/demo_r2/mainwindow.ui
+++ b/demo_r2/mainwindow.ui
@@ -243,27 +243,6 @@
       </widget>
      </widget>
     </item>
-    <item>
-     <widget class="QRadioButton" name="radioButton">
-      <property name="text">
-       <string>RadioButton</string>
-      </property>
-     </widget>
-    </item>
-    <item>
-     <widget class="QTabWidget" name="tabWidget">
-      <widget class="QWidget" name="tab">
-       <attribute name="title">
-        <string>Tab 1</string>
-       </attribute>
-      </widget>
-      <widget class="QWidget" name="tab_2">
-       <attribute name="title">
-        <string>Tab 2</string>
-       </attribute>
-      </widget>
-     </widget>
-    </item>
    </layout>
   </widget>
   <widget class="QStatusBar" name="statusBar"/>