Removed leftover abstract class.

src/Users/UserInfo.php

@@ -1,38 +0,0 @@
-<?php
-namespace Misuzu\Users;
-
-use Index\DateTime;
-use Index\Colour\Colour;
-
-abstract class UserInfo {
-    abstract public function getId(): string;
-    abstract public function getName(): string;
-    abstract public function getCountryCode(): string;
-
-    abstract public function isGuest(): bool;
-    abstract public function isSystem(): bool;
-    abstract public function isSuper(): bool;
-
-    abstract public function getDisplayRoleId(): string;
-
-    abstract public function getColour(): Colour;
-
-    abstract public function getCreatedDate(): DateTime;
-    abstract public function getLastActiveDate(): DateTime;
-    abstract public function getDeletedDate(): DateTime;
-
-    public function hasColour(): bool {
-        return !$this->getColour()->shouldInherit();
-    }
-
-    private static DateTime $epoch;
-    public function isDeleted(): bool {
-        return self::$epoch->diff($this->getDeletedDate())->totalSeconds() > 0;
-    }
-
-    public static function init(): void {
-        self::$epoch = DateTime::fromUnixTimeSeconds(0);
-    }
-}
-
-UserInfo::init();

utility.php

@@ -310,6 +310,7 @@ function get_country_name(string $code): string {
 
         'XK' => 'Kosovo',
         'XM' => 'The Moon',
+        'XS' => 'System',
         'XX' => 'Unknown',
 
         'YE' => 'Yemen',