Nina fix show description once (#447)

* Add version check for showing activity description or not

Moodle 4.0 displays the description of activities by default.

* Removing intro completely for 4.0.

Co-authored-by: Nina Herrmann <[email protected]>

view.php

@@ -67,10 +67,7 @@
 echo $questionnaire->renderer->header();
 $questionnaire->page->add_to_page('questionnairename', format_string($questionnaire->name));
 
-// Print the main part of the page.
-if ($questionnaire->intro) {
-    $questionnaire->page->add_to_page('intro', format_module_intro('questionnaire', $questionnaire, $cm->id));
-}
+// No need to print out intro in Moodle 4 and above.
 
 $cm = $questionnaire->cm;
 $currentgroupid = groups_get_activity_group($cm);