Were you asking about a section view (which is a complete view unto itself) or a broken out section (which shows a section of a selected area of an existing view)? If it is a standard section view then as they said you have to delete the entire view and start over. If however it is a broken out section, it will appear in the FeatureManager Design Tree as an item under that view. You can select and delete just the broken out section in the Feature Manager.