C#字典:每个密钥具有相同的值 - 我可以删除冗余吗？

Dictionary<string, string> dict = new Dictionary<string, string>();
dict.Add("key1", "value1");
dict.Add("key2", "value1");
dict.Add("key3", "value2");

var keysToRemove = dict.Where(x => x.Value == "value1")
                        .Select(x => x.Key)
                        .Skip(1);

foreach (var key in keysToRemove)
{
    dict.Remove(key);
}