Release dependency from aldarien/contract

app/Contract/Auth.php

@@ -1,17 +1,21 @@
 <?php
 namespace App\Contract;
 
-use App\Definition\Contract;
 use App\Service\Auth as AuthService;
 
 class Auth
 {
-	use Contract;
-
 	protected static function newInstance()
 	{
 		return new AuthService();
 	}
+	protected $instance;
+	protected static function getInstance() {
+		if (self::$instance === null) {
+			self::$instance = self::newInstance();
+		}
+		return self::$instance;
+	}
 	public static function __callStatic($name, $params)
 	{
 		if (!method_exists(Response::class, $name)) {

composer.json

@@ -10,7 +10,6 @@
         }
     ],
     "require": {
-      "aldarien/contract": "^1"
     },
     "require-dev": {
       "phpunit/phpunit": "^8"