Remove already hidden task stop button

src/views/app.html

@@ -960,9 +960,6 @@
             <p>If a configuration, update, restore or backup action resulted in an error, you can retry the task.</p>
             <p ng-show="app.error">An error occurred during the <b>{{ app.error.installationState | taskName }}</b> operation: <span class="text-danger"><b>{{ app.error.reason + ': ' + app.error.message }}</b></span></p>
             <button class="btn btn-primary pull-right" ng-click="repair.confirm()" ng-disabled="app.taskId || !app.error" tooltip-enable="app.taskId" uib-tooltip="App is busy">Retry {{ app.error.installationState | taskName }}</button>
-
-            <!-- this is hidden for now, use the CLI instead -->
-            <button class="btn btn-danger pull-right" ng-click="repair.stopAppTask(app.taskId)" ng-show="false && app.taskId">Cancel Current Task</button>
           </div>
         </div>
       </div>