LookAt，Offset，Effect Remove

Signed-off-by: TRAfoer <lhf190@outlook.com>

Assets/Scripts/EditorGame/GameElements/GameCamera/GameCamera.cs

@@ -77,6 +77,7 @@ namespace Ichni.RhythmGame
             var extensionButton = inspector.GenerateButton(this, generateAnimation, "Extension",
                 () => GameCameraExtension.GenerateElement("New Extension", Guid.NewGuid(),
                     new List<string>(), true, this, 1000f));
+
         }
     }