To Delete Bodies
You can only delete bodies that have 
no contributing features. You cannot delete a body that the system creates automatically.
no contributing features. You cannot delete a body that the system creates automatically.You cannot delete the only body in a part, even if the body does not have any contributing features.
 | In cases where you cannot delete a body, you can use the Remove Body tool. See To Remove Bodies. |
To delete a body, perform any of these actions:
• In the Model Tree, right-click a body that does not have any contribution features, and select 
Delete.
Delete.• Select a body, and press the DELETE key.