title: QML hide question mark from messagedialog
body: <p>Is it possible to hide the question mark from a qml messageDialog?
  My dialog:</p>
  
  <pre><code>MessageDialog {
      id: messageDialog
      text: "Do you want to remove the probe from the list"
      property int index: -1
  
  
      onAccepted: {
          //onAccepted is triggered twice, but we onyl want to remove the item once
          if(!removedItem){
              removedItem = true;
              applicationWindow.removeProbe(index)
              messageDialog.close()
          }
      }
  }
  </code></pre>
  
  <p>The result:</p>
  
  <p><a href="https://i.stack.imgur.com/v4DiD.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/v4DiD.png" alt="enter image description here"></a></p>
  
  <p>The question button is leading to nowhere.</p>