How do I completely remove web apps?

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http://askubuntu.com – I could not get the new web apps preview to work properly on my 12.04 system, so I decided to remove it using the following code: sudo apt-get install ppa-purge sudo ppa-purge ppa:webapps/preview sudo apt-get remove gnome-control-center-signon signond signon-keyring-extension signon-plugin-oauth2 signon-ui libunity-webapps-chromium unity-chromium-extension unity-lens-gdocs unity-lens-photo unity-scope-flickr xul-ext-webaccounts xul-ext-unity xul-ext-websites-integration However, this does not remove already created web apps, which are still accessible via the Unity Dash. In my case the Go (HowTos)