Can I remove the comment feed which is displayed under the comments from Disqus commenting platform?
Yes you can. The option is available in your Disqus settings, the URL is
http://siteID.disqus.com/admin/settings/ (replace siteID with yours site's profile id).
Now switch to the Discovery tab and choose a Discovery Level for your Disqus comments. If you don't want any comment feed under your comments, then choose "Just comments" from the options.
Save changes and done. Now the comments feed has been removed.