Delete Drillholes from Selected
If you have not already selected the (drive and/or ring) objects that contain the holes you want to delete, you will be prompted to select them:
Undo
You will not be prompted to confirm your deletions. If objects are deleted inadvertently, use the Edit | Undo (CTRL Z) option to recover.
Undo can be used to undo any editing operations, not just deletions.
See Also: Delete Selected Ring Design Object