This is done from the Reports section on your Zoom Dashboard. Please see step-by-step instructions below:

1. After your meeting has ended, go to Reports on your Zoom Dashboard https://yorku.zoom.us/, as you can see on the screenshot below: 
2. Click Meeting under Usage Reports
3. Click Survey Report and search for your meeting there:
   Delete

   You can also choose to search for your meeting by Meeting ID, as you can see on the screenshot below: