How to remove geotag from your iPhone photos
Settings > General > Reset > Reset Location Warnings
It may ask your password if protected. Once you enter your passcode, press Reset Warnings. This will reset your location warnings to factory defaults. Any app that uses location information including Camera app will ask your permission when used for the first time. Open Camera app, it will show a message as below.
“Camera” Would Like to Use Your Current Location
Photos will be tagged with the location where they were taken.
Click Don’t Allow if you do not want your photos taken from iPhone camera to have geotag.