We can't remove the (1 Registrant) text, but we can change the text color to camouflage with the form background by doing the following:
  1. In the OLX plugin, click on the Events tab
  2. Click the "Edit" button on the form in question
  3. Click on the "Fine tuning" tab
  4. On the "Fine tuning" tab, click on the "Event details" tab
  5. On the "Event details" tab, click on the "Fine print" option
  6. On the "Fine print" option, click the "Text color" box
  7. Type the following in the below fields:
    • R: 255
    • G: 255
    • B: 255
    • # ffffff
  8. Click "Done"
  9. Click "Save