Bulk delete completed tasks

Not sure whether this is the right space, BUT I'd really like to see a feature that allows deleting all completed tasks in a bucket. Previously used Trello and there, it's just a standard thing that you use every now and then when you feel like house cleaning.

However, with the nice stats and charts in Planner, this becomes a mandatory feature, since all the completed tasks appear in the charts and distort the information quite a bit / push the relevant facts aside ...