Delete a part, assembly, or container
1. Click Structure and then, in the Utility group, click 
Delete 3D.
Delete 3D. | The Utility group is available on other tabs such as Modeling, Feature, 3D Geometry, and Analysis. |
2. Select a part or assembly:
◦ Click on a part in the viewport or
◦ Double-click on a part or assembly in the Structure Browser.
3. Click 
to complete the operation.
to complete the operation.