There is absolutely no correlation between NetworkInfo and the tracking usage description! These two are completely unrelated.
Adding the IDFA ANE is only useful if you want to track users and get access to the IDFA. Adding this will not resolve your issue unless you want to go down the route of displaying the ATT dialog.
If you are certain the NSUserTrackingDescription isn't in your app (which appears to be the case) and you want to remove it from an existing version, I'm not exactly sure on the process here. I would suggest you upload a version without it to test flight and then ask the apple team to validate that version explaining you want to remove tracking.