What is "See Also" in Document Set View Property

Hi,

I created a document set programmetically in SharePoint 2013.  I uploaded around 10 documents in it. Started crawling in the environment. Next day when I click on the document set page and then on " View All Properties" as shown in the below screenshot



I saw a "See Also" link at the right side or at bottom of the document set properties. It displays some set of files from the site. These files are not in the document set. 

Can someone help me how to remove or hide "See Also" link.