title: disable hover on special slice of pie chart
body: <p>I know how to <a href="https://stackoverflow.com/questions/16231565/disable-hover-on-highcharts">disable hover on highcharts</a>, and I edit the answer to disable hove on special slice as this <a href="http://jsfiddle.net/mohamedyakout91/e7brd9do/" rel="nofollow noreferrer">demo</a>, but it doesn't work.</p>
  
  <p>I edit series attribute as the following: </p>
  
  <pre><code>series: [{
    showInLegend: false,
    type: 'pie',
    name: 'Pie Chart',
    data: [
      ['Mobile', 65], // first half of pie
      {
         name: 'Other', 
         y: 35, 
         tooltip: { enabled: false }
      } // second half of pie
    ]
  </code></pre>
  
  <p>How can I disable hover for special slices on pie charts using highcharts ?</p>