Deleting an Event
From the LiveWhale interface, click the “Events” tab. (If the Events tab does not appear, the administrator has not assigned the events module to you.)
Find the event (or events) you wish to delete in the list and check the box next to it.
Choose “Delete” from the dropdown menu, and click “Go”.
Note: The selected item(s) will be removed from the system. This action cannot be undone!
You may also delete the item from the event edit screen:
From the events manager, find the event you wish to delete and click it.
Click the “Delete” link on the right side of the screen. You will be prompted to confirm this action.
Source: LiveWhale Support