MDL-71474 mod_chat: remove redundant next session action item.

Deprecate now unused lang string for same.

mod/chat/lang/en/chat.php

@@ -110,7 +110,6 @@ Chats are especially useful when the group chatting is not able to meet face-to-
 $string['modulename_link'] = 'mod/chat/view';
 $string['modulenameplural'] = 'Chats';
 $string['neverdeletemessages'] = 'Never delete messages';
-$string['nextsession'] = 'Next scheduled session';
 $string['no_complete_sessions_found'] = 'No complete sessions found.';
 $string['noguests'] = 'The chat is not open to guests';
 $string['nochat'] = 'No chat found';
@@ -175,5 +174,9 @@ $string['usingchat_help'] = 'The chat module contains some features to make chat
 * Beeps - You can send a sound to other participants by clicking the "beep" link next to their name. A useful shortcut to beep all the people in the chat at once is to type "beep all".
 * HTML - If you know some HTML code, you can use it in your text to do things like insert images, play sounds or create different coloured text';
 $string['viewreport'] = 'View past chat sessions';
+
 // Deprecated since Moodle 3.11.
 $string['sessionstart'] = 'The next chat session will start on {$a->date}, ({$a->fromnow} from now)';
+
+// Deprecated since Moodle 4.0.
+$string['nextsession'] = 'Next scheduled session';

mod/chat/lang/en/deprecated.txt

@@ -1 +1,2 @@
 sessionstart,mod_chat
+nextsession,mod_chat

mod/chat/lib.php

@@ -1322,13 +1322,6 @@ function chat_extend_settings_navigation(settings_navigation $settings, navigati
     global $DB, $PAGE, $USER;
     $chat = $DB->get_record("chat", array("id" => $PAGE->cm->instance));
 
-    if ($chat->chattime && $chat->schedule) {
-        $nextsessionnode = $chatnode->add(get_string('nextsession', 'chat').
-                                          ': '.userdate($chat->chattime).
-                                          ' ('.usertimezone($USER->timezone).')');
-        $nextsessionnode->add_class('note');
-    }
-
     $currentgroup = groups_get_activity_group($PAGE->cm, true);
     if ($currentgroup) {
         $groupselect = " AND groupid = '$currentgroup'";

mod/chat/view.php

@@ -75,7 +75,6 @@ chat_view($chat, $course, $cm, $context);
 $strenterchat    = get_string('enterchat', 'chat');
 $stridle         = get_string('idle', 'chat');
 $strcurrentusers = get_string('currentusers', 'chat');
-$strnextsession  = get_string('nextsession', 'chat');
 
 $courseshortname = format_string($course->shortname, true, array('context' => context_course::instance($course->id)));
 $title = $courseshortname . ': ' . format_string($chat->name);