Revert "HttpClient timeout was not working well in .NET Framework"

This reverts commit 03fc685.

Author: claudiamurialdo

dotnet/src/dotnetframework/GxClasses/Domain/GxHttpClient.cs

@@ -652,11 +652,6 @@ HttpResponseMessage ExecuteRequest(string method, string requestUrl, CookieConta
 			if (proxy != null)
 				handler.Proxy = proxy;
 			HttpResponseMessage response;
-
-#if !NETCORE
-			handler.ReceiveDataTimeout = TimeSpan.FromMilliseconds(_timeout);
-			handler.ReceiveHeadersTimeout = TimeSpan.FromMilliseconds(_timeout);
-#endif
 			using (client = new HttpClient(handler))
 			{
 				client.Timeout = TimeSpan.FromMilliseconds(_timeout);