Android Package Management

Hello,

My brother passed away suddenly last week. In his memory, I decided to heed his constant whinging at me to root my phone and install a newer kernel/system image. This was pleasingly easy to do, before I knew it I had upgraded to Cyanogenmod 10. It's not the cutting edge, but then my phone is quite old at this point. ;)

Upon booting, the lack of pointless vendor apps was refreshing to my eyes, but there were a couple things I wanted to address. One of them was that Terminal Emulator is included, but compared to what is available via the F-Droid repo, it's out of date (as expected). F-Droid requires that the apps that it manages have an F-Droid signature, but I couldn't uninstall TE as it's classed as built-in.

Reading around, forcing uninstallation as root amounts to deleting the .apk from /system/app, which I have done, but the signature of the package is still stored somewhere.

Does anyone know where I should be looking to clear all traces of the app?