title: Hiding status bar notification icon for foreground service after raising PRIORITY_MAX notification
body: <p>First, do this (tested on Nexus 5 running 4.4.2):</p>
  
  <ul>
  <li>Pass a PRIORITY_LOW notification to Service.startForeground().</li>
  <li>Observe notification is not shown in status bar.</li>
  <li>Raise a PRIORITY_MAX notification using same notification ID.</li>
  <li>Observe notification is shown in status bar.</li>
  </ul>
  
  <p>Now, is there any way to remove that icon from the status bar (other than Service.stopForeground())?</p>
  
  <p>I've tried calling NotificationManager.cancel() and NotificationManager.cancelAll(). And also tried raising the same original PRIORITY_LOW notification. But all of them leave the notification icon in the status bar.</p>