代码修改后的版本，全部提交

COSXML/Model/Bucket/DeleteBucketCORSRequest.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+
+using System.Text;
+using COSXML.Common;
+/**
+* Copyright (c) 2018 Tencent Cloud. All rights reserved.
+* 11/2/2018 8:33:02 PM
+* bradyxiao
+*/
+namespace COSXML.Model.Bucket
+{
+    /// <summary>
+    /// 删除 Bucket CORS
+    /// <see cref="https://cloud.tencent.com/document/product/436/8283"/>
+    /// </summary>
+    public sealed class DeleteBucketCORSRequest : BucketRequest
+    {
+        public DeleteBucketCORSRequest(string bucket) : base(bucket)
+        {
+            this.method = CosRequestMethod.DELETE;
+            this.queryParameters.Add("cors", null);
+        }
+    }
+}