lib/db/upgradelib.php CiBoT errors

diff --git a/lib/db/upgradelib.php b/lib/db/upgradelib.php
index e0a9426aee4..e67af9972de 100644
--- a/lib/db/upgradelib.php
+++ b/lib/db/upgradelib.php
@@ -1295,13 +1295,13 @@ function upgrade_calendar_override_events_fix(stdClass $info, bool $output = tru
 function upgrade_migrate_question_table(): void {
     global $DB;

-    /** @var int Maximum size of array. */
+    // Maximum size of array.
     $maxlength = 30000;

-    /** @var array Array of question_versions objects. */
+    // Array of question_versions objects.
     $questionversions = [];

-    /** @var array Array of question_set_references objects. */
+    // Array of question_set_references objects.
     $questionsetreferences = [];

     // The actual update/insert done with multiple DB access, so we do it in a transaction.