Can we remove the Continue button from Quiz Results?

Removing the Continue button from the Quiz Results slide is NOT a good idea in my experience.  Clicking the Continue button triggers functions in Captivate to terminate the quiz and commit the score to the LMS.  If this button is not clicked, Captivate may not be sure the person has decided they're done with the quiz and wants their score to be captured by the LMS at that point.  There are often other buttons on the Quiz Results slide to offer the user the option of Retaking or Reviewing the Quiz.  Only the Continue button is designed to take them further beyond the Quiz Result slide.

Like yourself, I have also found learners often fail to grasp the importance of the Continue button and don't realise they need to do something extra (beyond reaching the Quiz Results slide) in order for their score to be captured.  So what I usually do is rename the Continue button to something more meaningful such as: Register Your Score, or Record Quiz Results Now.  Having a name like this (and making the button nice and large and bold so that it's not easy to miss) clearly tells people that they need to click this button if they want their score to be retained.  It's just a simple change, but it practically eliminated all issues we had with people just closing down their browser when they saw the Quiz Results.