Deleting Objects in an Application 
Choose the application in which the object is located from the Repository or Recently Used panel.
In the Detail section, under Contained Objects, choose the object type you want to delete from the Type field.
A list of the selected object type appears.
Example
If you want to delete a data object, choose Data Object in the Type field.
Choose the object you want to delete from the list.
Note
Before deleting an object, use the Where-Used List to check the usage of objects.
For more information, see Checking Usage of Objects
You can either delete it directly or you can mark it for delete.
Delete an object which is not used any more in any version
Choose .
In the Confirmation of Deletion dialog box that appears, choose OK.
Delete an object which is marked for delete
Choose .
In the Confirmation of Deletion dialog box that appears, choose OK.
Mark an object which is not used any more
Choose .
In the Confirmation of mark for deletion dialog box that appears, choose OK.
The confirmation message appears above the menu bar.
The object gets deleted.