From the rounds section of the app click on the desired round. Select Tracked Shots Flyover from the round menu. Review the desired hole and then press the edit pencil icon at the top right. Click on the tracked shot line and the trash icon will appear, select this to delete and remove the tracked shot. The tracked shot will then be removed from your round and all statistical considerations.
If the tracked shot is in the middle of other shots, this will alter these other connecting shots. If you delete the first tracked shot of a hole, it will not adjust any other tracked shots.