Turn off simulate user location by Xcode

Simpler working solution is:

In XCode goto Product -> Scheme -> Edit Scheme

Options -> Default Location: None

Rebuild application

1. Delete the app from the device.
2. Under "Edit Scheme" uncheck the Core Location "Allow Location Simulation" setting.
3. IMPORTANT STEP! Turn the device off and then back on. (Clears out the GPX file, I believe).
4. Then re-load the app to the device.