Remove deprecated email behaviour in old chamilo platforms see BT#15034

Settings should be set in app/config/mail.conf.php

main/inc/global.inc.php

@@ -307,12 +307,6 @@ require_once $libraryPath.'formvalidator/Rule/allowed_tags.inc.php';
 // which will then be usable from the banner and header scripts
 $this_section = SECTION_GLOBAL;
 
-// Include Chamilo Mail conf this is added here because the api_get_setting works
-
-// Fixes bug in Chamilo 1.8.7.1 array was not set
-$administrator['email'] = isset($administrator['email']) ? $administrator['email'] : 'admin@example.com';
-$administrator['name'] = isset($administrator['name']) ? $administrator['name'] : 'Admin';
-
 // Including configuration files
 $configurationFiles = [
     'mail.conf.php',