If you have a part you wish to delete, click the Delete Part button 
on the Part Information section for the specific part. A confirmation window prompts you to confirm the Delete operation or Cancel. Exercise caution when deleting a part as it may be used in multiple legacy designs. Deleting the part can ultimately affect the usage of those designs.
Note: the Delete button is only visible if you are granted permission to delete parts.
Delete Part
Click Delete to confirm part deletion or Cancel to keep the part.
Delete Part Confirmation