You can use the Environments page to delete an Environment resource for a project.
NOTE:If you delete a resource, it automatically removes the associations for the resource, including those assigned to workloads that are in progress and completed. If the same associations apply, consider whether it is more appropriate to edit the resource name and settings.
In the Web Interface toolbar, select Resources.
Select the Environments tab.
Click Target to view the list of Environment resources.
Select the appropriate environment, click Delete, then click Yes to confirm the deletion.