Revert "fix"

This reverts commit 6c3d0d9.

tests/Core/CoreAbstractAPITest.php

@@ -36,12 +36,11 @@ public function testConstruct()
     public function testHttpInstance()
     {
         $accessToken = \Mockery::mock(AccessToken::class);
-        $accessToken->shouldReceive('getMode')->andReturn('dev');
-
         $api = new FooAPI($accessToken);
         $this->assertNull($api->getHttpInstance());
 
         $api->getHttp();
+
         $this->assertInstanceOf(Http::class, $api->getHttpInstance());
         $middlewares = $api->getHttp()->getMiddlewares();
         $this->assertCount(3, $middlewares);