If you wish to delete an individual Deployment, follow these steps:
1. Navigate to the Project Overview page of the Project where the specific Deployment is located and click the Deployments tab
Deployments tab of the Project Overview page
2. Click on the Deployment that you would like to delete from the Deployments list
Deployments list from the Deployments tab
3. Click the more options button and then click Delete from the drop-down
Delete button from drop-down in the Deployment's page
WARNING: Deleting an individual deployment is a permanent, irreversible action.