refactor(Form1.cs): 移除多余的进度更新调用

移除在验证在线数据和比较MD5文件后多余的`UpdateProgressValue`调用，以简化代码逻辑并避免重复更新进度

Form1.cs

@@ -111,7 +111,6 @@ namespace CheckDownload
                 OssClient client = new OssClient(OssEndpoint, OssAccessKeyId, OssAccessKeySecret);
                 var onlineData = ReadOnlineMd5File(client, OssBucketName, Md5File);
                 if (!ValidateOnlineData(onlineData.Version, onlineData.Md5, onlineData.Data)) return;
-                UpdateProgressValue(++currentStep * 100 / totalSteps);
 
                 UpdateStatus("比较本地和在线MD5文件...");
                 var compareResult = CompareMd5Data(onlineData.Data);
@@ -123,7 +122,6 @@ namespace CheckDownload
                     this.Close();
                     return;
                 }
-                UpdateProgressValue(++currentStep * 100 / totalSteps);
 
                 UpdateStatus("下载并验证文件...");
                 _totalCount = compareResult.Count;