diff --git a/classes/sessions_page_params.php b/classes/sessions_page_params.php
index 0731b29..cba5c88 100644
--- a/classes/sessions_page_params.php
+++ b/classes/sessions_page_params.php
@@ -36,8 +36,6 @@ class mod_attendance_sessions_page_params {
     const ACTION_DELETE_SELECTED   = 4;
     const ACTION_CHANGE_DURATION   = 5;
     const ACTION_DELETE_HIDDEN     = 6;
-    const ACTION_CREATE_CAL_EVENTS = 7;
-    const ACTION_DELETE_CAL_EVENTS = 8;
 
     /** @var int view mode of taking attendance page*/
     public $action;
diff --git a/lang/en/attendance.php b/lang/en/attendance.php
index d1f54ab..e1252ab 100644
--- a/lang/en/attendance.php
+++ b/lang/en/attendance.php
@@ -77,8 +77,6 @@ $string['commonsessions'] = 'All students';
 $string['confirmdeleteuser'] = 'Are you sure you want to delete user \'{$a->fullname}\' ({$a->email})?<br/>All of their attendance records will be permanently deleted.';
 $string['countofselected'] = 'Count of selected';
 $string['copyfrom'] = 'Copy attendance data from';
-$string['createcalevents'] = 'Create calendar events';
-$string['createcheckcalevents'] = 'Are you sure you want to create the calendar events for the following sessions?';
 $string['createmultiplesessions'] = 'Create multiple sessions';
 $string['createmultiplesessions_help'] = 'This function allows you to create multiple sessions in one simple step.
 The sessions begin on the date of the base session and continue until the \'repeat until\' date.
@@ -92,8 +90,6 @@ $string['days'] = 'Days';
 $string['defaults'] = 'Defaults';
 $string['defaultdisplaymode'] = 'Default display mode';
 $string['delete'] = 'Delete';
-$string['deletecalevents'] = 'Delete calendar events';
-$string['deletecheckcalevents'] = 'Are you absolutely sure you want to delete the calendar events for the following sessions?';
 $string['deletelogs'] = 'Delete attendance data';
 $string['deleteselected'] = 'Delete selected';
 $string['deletesession'] = 'Delete session';
diff --git a/renderer.php b/renderer.php
index ba328f1..ec70c5d 100644
--- a/renderer.php
+++ b/renderer.php
@@ -320,9 +320,7 @@ class mod_attendance_renderer extends plugin_renderer_base {
             }
 
             $options = array(mod_attendance_sessions_page_params::ACTION_DELETE_SELECTED => get_string('delete'),
-                mod_attendance_sessions_page_params::ACTION_CHANGE_DURATION => get_string('changeduration', 'attendance'),
-                mod_attendance_sessions_page_params::ACTION_CREATE_CAL_EVENTS => get_string('createcalevents', 'attendance'),
-                mod_attendance_sessions_page_params::ACTION_DELETE_CAL_EVENTS => get_string('deletecalevents', 'attendance'));
+                mod_attendance_sessions_page_params::ACTION_CHANGE_DURATION => get_string('changeduration', 'attendance'));
 
             $controls = html_writer::select($options, 'action');
             $attributes = array(
diff --git a/sessions.php b/sessions.php
index 7d90f1a..fc0bebb 100644
--- a/sessions.php
+++ b/sessions.php
@@ -132,8 +132,6 @@ switch ($att->pageparams->action) {
         echo $OUTPUT->footer();
         exit;
     case mod_attendance_sessions_page_params::ACTION_DELETE_SELECTED:
-    case mod_attendance_sessions_page_params::ACTION_CREATE_CAL_EVENTS:
-    case mod_attendance_sessions_page_params::ACTION_DELETE_CAL_EVENTS:
         $confirm    = optional_param('confirm', null, PARAM_INT);
         $message = get_string('deletecheckfull', '', get_string('session', 'attendance'));
 
@@ -144,12 +142,6 @@ switch ($att->pageparams->action) {
                 $att->delete_sessions($sessionsids);
                 attendance_update_users_grade($att);
                 redirect($att->url_manage(), get_string('sessiondeleted', 'attendance'));
-            } else if ($att->pageparams->action == mod_attendance_sessions_page_params::ACTION_CREATE_CAL_EVENTS) {
-                attendance_create_calendar_events($sessionsids);
-                redirect($att->url_manage(), get_string('createcheckcalevents', 'attendance'));
-            } else if ($att->pageparams->action == mod_attendance_sessions_page_params::ACTION_DELETE_CAL_EVENTS) {
-                attendance_delete_calendar_events($sessionsids);
-                redirect($att->url_manage(), get_string('deletecheckcalevents', 'attendance'));
             }
         }
         $sessid = optional_param_array('sessid', '', PARAM_SEQUENCE);
@@ -158,12 +150,6 @@ switch ($att->pageparams->action) {
         }
         $sessionsinfo = $att->get_sessions_info($sessid);
 
-        if ($att->pageparams->action == mod_attendance_sessions_page_params::ACTION_CREATE_CAL_EVENTS) {
-            $message = get_string('createcheckcalevents', 'attendance');
-        } else if ($att->pageparams->action == mod_attendance_sessions_page_params::ACTION_DELETE_CAL_EVENTS) {
-            $message = get_string('deletecheckcalevents', 'attendance');
-        }
-
         $message .= html_writer::empty_tag('br');
         foreach ($sessionsinfo as $sessinfo) {
             $message .= html_writer::empty_tag('br');