In password virtualmin driver removed support for username in format based on user alias (#1489332)

plugins/password/config.inc.php.dist

@@ -320,8 +320,7 @@ $config['hmailserver_server'] = array(
 // 5: domain-username
 // 6: username_domain
 // 7: domain_username
-// 8: username@domain; mbox.username
+$config['password_virtualmin_format'] = 0;
-$config['password_virtualmin_format'] = 8;
 
 
 // pw_usermod Driver options

plugins/password/drivers/virtualmin.php

@@ -48,10 +48,6 @@ class rcube_virtualmin_password
             $pieces = explode("_", $username);
             $domain = $pieces[0];
             break;
-        case 8: // domain taken from alias, username left as it was
-            $email = $rcmail->user->data['alias'];
-            $domain = substr(strrchr($email, "@"), 1);
-            break;
         default: // username@domain
             $domain = substr(strrchr($username, "@"), 1);
         }