DeleteUser Method for Entity Framework MVC3 Razor Custom Member Provider C# Using LINQ

public override bool DeleteUser(string username, bool deleteAllRelatedData)
{
    // deleteAllRelatedData not implemented
    try
    {
        using (var context = new SSSEntities())
        {

            UserProfile u = context.UserProfiles
                .SingleOrDefault(up => up.UserName == username);

            context.UserProfiles.DeleteObject(u);
            context.SaveChanges();
            return true;
        }
    }
    catch
    {
        return false;
    }