Quiz

In Moodle 3.3,

go to /mod/quiz/renderer.php

comment out line 742 like this (add // infront):

//$button->add_action(new confirm_action(get_string('confirmclose', 'quiz'), null,

Then in the following line, remove 2 brackets from this:-

  get_string('submitallandfinish', 'quiz')));

to this:-

  get_string('submitallandfinish', 'quiz');