To delete one or more certificates, open the certificate manager by selecting
Tools -> Manage Certificates...
option from the menu bar. This
will open the Manage Certificates
dialog.
In the Manage Certificates
dialog, select or highlight the certificate(s)
that you want to delete, and click on the Delete
button. A confirmation
dialog will be displayed, asking, if you really want to delete the selected
certificates. Choose Yes
to delete the certificates permanently
from your trusted certificates database. Select No
to cancel the
delete operation.