don't support deprecated mail transport

Author: mykiwi

DependencyInjection/SwiftmailerExtension.php

@@ -107,7 +107,7 @@ protected function configureMailer($name, array $mailer, ContainerBuilder $conta
 
             $container->setParameter(sprintf('swiftmailer.mailer.%s.transport.name', $name), $transport);
 
-            $transportId = in_array($transport, array('smtp', 'mail', 'sendmail', 'null'))
+            $transportId = in_array($transport, array('smtp', 'sendmail', 'null'))
                 ? sprintf('swiftmailer.mailer.%s.transport.%s', $name, $transport)
                 : $transport;
 

DependencyInjection/SwiftmailerTransportFactory.php

@@ -64,11 +64,6 @@ public static function createTransport(array $options, RequestContext $requestCo
 
             $smtpTransportConfigurator = new SmtpTransportConfigurator(null, $requestContext);
             $smtpTransportConfigurator->configure($transport);
-        } elseif ('mail' === $options['transport']) {
-            $transport = new \Swift_Transport_MailTransport(
-                new \Swift_Transport_SimpleMailInvoker(),
-                $eventDispatcher
-            );
         } elseif ('null' === $options['transport']) {
             $transport = new \Swift_Transport_NullTransport($eventDispatcher);
         } else {