This method will remove a credential from the current volume. The credential must have been created using the 'addNewCredential' method.
A username assigned to the current storage volume
- SoftLayer_Exception_Network_Storage_RemoveCredential: "Problem removing a credential from the volume. The network storage type is not supported for credential removal in this manner."
- SoftLayer_Exception_Network_Storage_Iscsi_EqualLogic_Version3_RemoveCredential_CredentialRequired: "Username could not be removed from Iscsi volume because it is required to identify the volume"