How do I remove stuck notification? I have a notification from the TED app that refuses to go away. I tried clearing app data and rebooting and it didn't go away. I tried uninstalling and rebooting and it didn't go away. Is factory reset my only other option now?

I'm using a nexus-7 running stock build JOP40D (4.2.1). The device is not rooted.
Go into the app info by going into settings applications and finding your Ted app or dragging it from the launcher to the app info button. Disable and re-enable notifications with the "show notification" button.