Deletes the named category from the persistent store, along with any key/value pairs contained therein.
- storage:Pointer to the IPersistentStorage interface object.
- categoryName:The name of the category to delete.
int IPERSISTENTSTORAGE_DeleteCategory(IPersistentStorage* storage, const AECHAR* categoryName);
If the currently set category is named for deletion, the category is unset after deletion succeeds. If deletion fails, the category is considered to be still set.