cull(engine-cleanup): pass-8 phase-2 cascade round 2 after MyPageItemBattle stub

SVSim.BattleEngine/Engine/UIBase.cs

@@ -119,16 +119,7 @@ public class UIBase : MonoBehaviour
 	{
 	}
 
-	public virtual void PushTurnButton()
-	{
-	}
-
 	public virtual void assetBundleEnd()
 	{
 	}
-
-	public UIManager.ViewScene getBackScene()
-	{
-		return backSceneSave;
-	}
 }