Quiz

To remove the navigation panel, comment the lines starting on 133:

// Arrange for the navigation to be displayed in the first region on the page.
/*
$navbc = $attemptobj->get_navigation_panel($output, 'quiz_attempt_nav_panel', $page);
$regions = $PAGE->blocks->get_regions();
$PAGE->blocks->add_fake_block($navbc, reset($regions));
*/