smaller stylecop fixes in Wox.Core and Wox.Infra (#5671)

* Headers
unneeded usings
files need blank line at bottom
Fixed double returns
Returns after braces

* commenting out stylecop

src/modules/launcher/Wox.Infrastructure/Http/Http.cs

@@ -1,4 +1,8 @@
-using System.IO;
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.IO;
 using System.Net;
 using System.Net.Http;
 using System.Text;
@@ -80,4 +84,4 @@ namespace Wox.Infrastructure.Http
             }
         }
     }
-}
+}