title: How to remove multiple selected rows from grid
body: <p>I have grid then I can select few or all the rows and on toolbar with a "delete" button. I can delete one row, but for remove several; selected rows I don't have a method.</p>
  
  <p>Can somebody help me? Thank you.</p>
  
  <p>The following is for deletion of one selected row:</p>
  
  <pre><code>listeners: {
      click: {
          scope: this,
          fn: function(sm, selection) {
              var selection = this.getView().getSelectionModel().getSelection()[0];
              /*if (selection.length &gt; 1) {
                  store.removeAll(selection);
              }*/ //This not working
              else {
                  store.remove(selection);
              }
              store.sync();
          }
      }
  }
  </code></pre>