DI updates

Runtime/Engine/Code/Foundation/IService.cs

@@ -1,15 +1,11 @@
 using System;
-using System.Threading;
-using Cysharp.Threading.Tasks;
 using UnityEngine;
 
 namespace RebootKit.Engine.Foundation {
     public interface IService : IDisposable {
-        UniTask OnInit(CancellationToken cancellationToken);
     }
 
     public abstract class ServiceMonoBehaviour : MonoBehaviour, IService {
-        public abstract UniTask OnInit(CancellationToken cancellationToken);
         public abstract void Dispose();
     }