Can I delete the values ​​displayed in "Attached knowledge"?

[bonsai]

Is it possible to delete the values ​​marked in yellow below?

I register values ​​in the "Attached knowledge" field by clicking the button highlighted in yellow below.
If I click it by mistake, I would like to delete the value. Is this possible?

[Kieran Anson]

You'll need to delete the records from the kb_task table that is a many-to-many relationship