Uninstalling Info block removes cms links

[Sanis]

I have put some cms links in the header:

{foreach from=$cmslinks item=cmslink}
   {if $cmslink.id_cms == 4}
{$cmslink.meta_title|escape:'htmlall':'UTF-8'}
               {/if}
           {/foreach}

When i uninstall info bock they are removed from the header. Why? Footer links block works exactly the same:

{foreach from=$cmslinks item=cmslink}