A non-default Service Package can be deleted.
You cannot delete a default service Package. To delete a default package, first designate a new Package as the default, and then delete the undesired Package.
To delete a Service Package:
On the Manage Service Packages page, choose the Service Package to be deleted.
In the Actions drop-down, select Delete.
Click Yes to confirm deletion.
Go to: Portal Guide > Manage Service Packages