Remove app from Location Services?
It took me a while to narrow down the file that contains the list of apps shown in that system pref pane, but I finally found.  The list of apps is stored in /var/db/locationd/clients.plist. Once I found that juicy bit of info a quick Google search revealed this related posting on superuser.com: Remove Applications from Location Services in Security &amp; Privacy on Mac OS X 10.8. That post is more of an answer than a question. It contains detailed step-by-step instructions on how to remove the no longer installed app from the list.