删除场景中过时的组件

脚本放在Editor目录下，在菜单中选择Cleanup/Cleanup Scenes with Deprecated Components 调用，代码如下：

using UnityEngine;
using UnityEditor;
using UnityEditor.SceneManagement;
using System.Linq;

public class DirtyAndSaveSceneToRemoveDeprecatedComponents : MonoBehaviour
{
    [MenuItem("Cleanup/Cleanup Scenes with Deprecated Components")]
    static void DoCleanup()
    {
        var sceneGUIDs = AssetDatabase.FindAssets("t:Scene");
        string[] scenePaths = sceneGUIDs.Select(i => AssetDatabase.GUIDToAssetPath(i)).ToArray();

        for (int i = 0; i < scenePaths.Length; i++)
        {
            var scene = EditorSceneManager.OpenScene(scenePaths[i], OpenSceneMode.Additive);

            EditorSceneManager.MarkSceneDirty(scene);
            EditorSceneManager.SaveScene(scene);
            
            if(scene != EditorSceneManager.GetActiveScene())
                EditorSceneManager.UnloadSceneAsync(scene);
        }
    }
}

代码来源：https://github.com/AscendingMan/removedeadcomponentsfromscenes