It's super easy to create tasks with Begin, and it's pretty easy to get rid of them, too. Here's how it's done.
Trash a task in Slack
Just after creating a task (or from the
tasks command in DM with Begin), you can trash a task by clicking its ··· button, then clicking Trash.
If you want to bring that task right on back, just click the Restore from Trash button.
Trash a task on Mac or web
Presently, tasks can only be trashed from Slack. (But not for long!)