The best way to remove a fellow traveler from a trip is, to ask her/him to leave the trip.
A fellow traveler can leave a trip as follows:
- Open the Trip settings
- Tap Leave trip
If this is not the way you want to proceed and you are the person, who created the trip, you can also delete a fellow traveler the hard way:
- Open your trip
- Tap Add fellow travelers
- At the bottom of this screen, there is a list of all fellow travelers in this trip. There you will find a small X next to the names, tap it. Please use this feature wisely!