This is a string that is a part of the RadWindowManager predefined dialogs. It is used for localization.
There are several ways to make it less prominent in the page:
1) modify the templates
as described here: http://www.telerik.com/help/aspnet-ajax/window-dialogs-changing-dialog-templates.html so that they do not include
this string. Note that you will not be able to localize the dialogs after that. Alternatively, you can replace the anchors with buttons to make them less important for search engines, but you will lose their styling
2) move the RadWindowManager down in the page
so it does not put the templates at the beginning of the rendered page, once again making them less important
3) combine the above approaches or even switch to the lightweight rendering as it uses buttons and not anchors.
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