If you installed via APK, you can just uninstall it normally. No zip uninstaller needed.Is there some zip uninstaller on the camera and some zip to enable slow motion?
Sent from my Moto G 2015 using XDA Labs
I never used the zip installer, but I'm assuming perhaps it makes it a system app? If you made it a system app, just dirty flash your ROM and it will disappear (since it's not built into the ROM). If it's not a system app, just regular uninstall should work.