You can use the ActionTrail console to delete a trail. If you want to delete a trail that receive log files from all regions, you must select the region where the trail was originally created.
Log on to the ActionTrail console.
In the left navigation pane, click Trail List, and then choose the trail you want to delete.
Click the Delete button.
In the displayed Delete trail dialog box, click Confirm to delete the trail from the trail list. Log files that have already been delivered to OSS will not be deleted.