Delete the group from SharePoint 2010 site using Client Object Model

using System; using System.Collections.Generic; using System.Linq; using System.Text; using Microsoft.SharePoint.Client;   namespace COM {     class Program     {         static void Main(string[] args)         {             // siteURL is the string that contains the site URL             string siteUrl = "http://serverName:50000/sites/Testing";             // ClientContext object is used to get the context for the SharePoint objects             ClientContext clientContext = new ClientContext(siteUrl);             Web web = clientContext.Web;             Group testingVisitorsGroup = web.SiteGroups.GetById(7);             GroupCollection groupColl = web.SiteGroups;             groupColl.Remove(testingVisitorsGroup);                    clientContext.ExecuteQuery();                   }     } }