update

removing an IDE injected namespace that is never usedd.

Author: NoelStephensUnity

com.unity.netcode.gameobjects/Tests/Runtime/TestHelpers/NetcodeIntegrationTest.cs

@@ -11,7 +11,6 @@
 using UnityEngine;
 using UnityEngine.SceneManagement;
 using UnityEngine.TestTools;
-using static UnityEngine.UI.GridLayoutGroup;
 using Object = UnityEngine.Object;
 
 namespace Unity.Netcode.TestHelpers.Runtime