To hide the bus in a distribution equipment, go to
Ribbon: DM Electrical->One-Line Diagram-> 
Hide Bus
Pulldown Menu: DM Electrical->One-Line Diagram->Hide Bus
You will be prompted to select the distribution equipment in which the bus is to be hidden.
Select distribution equipment to remove bus from:
Select the distribution equipment and the bus will be hidden.
Only the bus graphic will be hidden. Any other text or labels will remain.