Performs any needed cleanup work when a policy item is removed from a policy.
Assembly: Microsoft.Office.Policy (in Microsoft.Office.Policy.dll)
SharePoint Server 2010 calls the method when an existing policy item is removed from a policy. If you delete a policy item from a policy, SharePoint Server 2010 calls the method of the associated policy feature to perform any needed cleanup work. You use this method to undo anything you did when you called the Register method that no longer applies.
For an example of how to use this method, see the example in the ProcessListItem method.