diff --git a/calendar/classes/external/day_exporter.php b/calendar/classes/external/day_exporter.php
index 377d2cd6e2c..71ef4216846 100644
--- a/calendar/classes/external/day_exporter.php
+++ b/calendar/classes/external/day_exporter.php
@@ -148,9 +148,6 @@ class day_exporter extends exporter {
             'nextperiod' => [
                 'type' => PARAM_INT,
             ],
-            'navigation' => [
-                'type' => PARAM_RAW,
-            ],
             'haslastdayofevent' => [
                 'type' => PARAM_BOOL,
                 'default' => false,
@@ -183,7 +180,6 @@ class day_exporter extends exporter {
             'neweventtimestamp' => $neweventstarttime->getTimestamp(),
             'previousperiod' => $this->get_previous_day_timestamp($daytimestamp),
             'nextperiod' => $this->get_next_day_timestamp($daytimestamp),
-            'navigation' => $this->get_navigation(),
             'viewdaylink' => $this->url->out(false),
         ];
 
@@ -264,18 +260,6 @@ class day_exporter extends exporter {
         return $this->related['type']->get_next_day($daytimestamp);
     }
 
-    /**
-     * Get the calendar navigation controls.
-     *
-     * @return string The html code to the calendar top navigation.
-     */
-    protected function get_navigation() {
-        return calendar_top_controls('day', [
-            'id' => $this->calendar->courseid,
-            'time' => $this->calendar->time,
-        ]);
-    }
-
     /**
      * Get the title for view link.
      *
diff --git a/calendar/upgrade.txt b/calendar/upgrade.txt
index 79c554796e8..a4221f87d49 100644
--- a/calendar/upgrade.txt
+++ b/calendar/upgrade.txt
@@ -1,6 +1,10 @@
 This files describes API changes in /calendar/* ,
 information provided here is intended especially for developers.
 
+=== 4.3 ===
+* The `navigation` property has been removed from `\core_calendar\external\day_exporter` as it is not being used by any of the
+  calendar templates.
+
 === 4.1 ===
 * New method `calendar_format_event_location` which will format the location property of an event, converting any
   links into suitable markup