cull(engine-cleanup): pass-8 phase-2 cascade round 1 after GachaUI stub

SVSim.BattleEngine/Shim/UnityEngine/UnityShim.cs

@@ -341,7 +341,6 @@ public void Play(int hash, int layer, float normalizedTime) { }
         public Rect pixelRect { get; set; }
         public Color backgroundColor { get; set; }
         public CameraClearFlags clearFlags { get; set; }
-        public RenderTexture targetTexture { get; set; }
         public Vector3 ViewportToWorldPoint(Vector3 p) => p;
         public Vector3 WorldToViewportPoint(Vector3 p) => p;
         public Vector3 ScreenToWorldPoint(Vector3 p) => p;

SVSim.BattleEngine/Shim/UnityEngine/UnityShim2.cs

@@ -34,7 +34,7 @@ namespace UnityEngine
     public partial class Light : Behaviour { }
     public class AudioListener : Behaviour { }
 
-    public enum RenderTextureFormat { ARGB32, Default }
+    public enum RenderTextureFormat { Default }
 
     public enum RuntimeInitializeLoadType
     {