oh, i still see this position in my site. may be you are using a old version. now please check for me this position: is it exists in the templateDetail.xml file?
you open the file: templatesja_aniontemplateDetails.xml and find the following code:
<position>hornav</position>
<position>breadcrumbs</position>
<position>search</position>
<position>banner</position>
<position>left</position>
<position>right</position>
<position>top</position>
<position>topnav</position>
if this is not defined in this file, please try to re-edit this file or you download the last version to upgrade your site.
thanks