You can remove a User from your Friend List as follows:

  1. On the Garage screen, tap the three lines button in the upper left corner of the screen.
  2. Now that the left menu is open, tap on the Friends button (indicated by a group of three people icon).
  3. The Friends screen should now be displayed, on this screen, tap on the "Friends" tab.
  4. Find the user you want to remove from your friends list and tap the red button assigned to them. This button is marked with a person icon with a minus sign.
  5. Now an alert should appear, you need to confirm that you want to remove this user from your friend list.

[HOW TO REMOVE AN USER FROM YOUR FRIEND LIST]