mozilla-b2g/fxos-appgen — pull request #2 by dminor (2014-04-30 18:00:48+00:00)
Title: Remove check to see if app exists in /data/local/webapps when uninstalling

This check prevents me from removing my web installed app, which has a uuid for a directory name instead of something based on the appname.

Removing an app that does not exist doesn't seem to have any bad effect, so I don't think this check is necessary.