To delete a certificate, perform the following tasks:
Click Server Certificates tab.
Select the certificate.
Select the certificate name from the certificate list.
Click the Delete button to delete the selected certificate.
To delete a certificate through the CLI, execute the following command:
wadm> delete-cert --user=admin --port=8989 --password-file=admin.pwd --token=internal --config=config1 cert1
See CLI Reference, delete-cert(1).