fix logout button script name -- it was causing runtime error (unable to logout)

Assets/LogoutButton.cs

@@ -1,9 +1,6 @@
-using System.Collections;
-using System.Collections.Generic;
 using Plugins.CommonDependencies;
 using Raindrop;
 using UnityEngine;
-using UnityEngine.Events;
 using UnityEngine.UI;
 
 [RequireComponent(typeof(Button))]
@@ -20,7 +17,6 @@ public class LogoutButton : MonoBehaviour
     {
         Debug.Log("logout requested by user UI");
         ServiceLocator.Instance.Get<RaindropInstance>().Netcom.Logout();
-        return;
     }
     
 }