You may want to remove of one the ticket types you created. Bear in mind that this can only be done if someone has NOT selected this ticket type.
How to get there:
Login to your Wizathon back end system.
Click on the "Setup/Tools" tab.
Click on "Manage Participant Registration Form Setup".
What to do:
Locate the "Ticket Type" category.
Find the ticket type you would like to get rid of.
Click on the second action item, "Delete" (x icon).
The page will refresh and that ticket type will have been removed.