Deleting a Webhook
From the Webhooks tab, you can delete a webhook. Click the icon in the upper-right corner of the webhook you want to delete. In the list, click Delete Webhook, as shown in “Delete Webhook”.
In the Delete Webhook window, click Delete to confirm your request, as shown in “Confirm Delete”.
The system will stop posting data to the target URL after the batches currently queued to be delivered are drained.