Hi Duane,
It is not required, it is an accessibility feature. Google or Bing "skiplinks" for more info, it is basically an anchor to make it possible to skip over navigation links, it is used in conjunction with the <portal:SkipLink ID="SkipLink1" runat="server" /> which creates a hidden link at the top that jumps to the startcontent anchor. It is visible when the user agent has disabled css which is sometimes done in screen readers or other assitive technology.
Best,
Joe