feat: code cleanup

Author: ikesnowy

test/Cnblogs.DashScope.Sdk.SnapshotGenerator/Program.cs

@@ -1,6 +1,4 @@
-// See https://aka.ms/new-console-template for more information
-
-using System.Net;
+using System.Net;
 using System.Text;
 
 const string basePath = "../../../../Cnblogs.DashScope.Sdk.UnitTests/RawHttpData";