MissingScriptFix.cs

using UnityEditor;
using UnityEngine;

static class MissingScriptFix {
    [MenuItem("Assets/- Fix MissingScripts Recursively on Selection")]
    [MenuItem("GameObject/- Fix MissingScripts Recursively on Selection", false, -1)]
    static void Fix() {
        foreach (GameObject g in Selection.gameObjects) {
            foreach (var t in g.GetComponentsInChildren<Transform>(true)) {
                var i = GameObjectUtility.RemoveMonoBehavioursWithMissingScript(t.gameObject);
                if (i <= 0) continue;
                Debug.Log($"Removed {i} on {AnimationUtility.CalculateTransformPath(t, null)}");
                EditorUtility.SetDirty(t);
            }
        }
    }
}