"Kindly remove our links" email request. Anyone else get this?

"Kindly remove our links" email request. Anyone else get this?

This morning I received the email below.  The only links on my site that lead to Zoho are embedded surveys as instructed by the Zoho survey site.  I am a yearly paid subscriber and really don't know how to act on  or respond this email request.  Anyone else get it?

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I am Velu, Webmaster at Zoho Corporation.

We have noticed a number of back links from your website to our webpage http://www.zoho.com/survey/. Google has detected unnatural links pointing to our website. As a result, they have applied manual spam action. We are asking all the website owners to remove the links instead of disavow links.

There is 1 link from  howdidweserveyou.net to our webpage as per the Google webmaster tools. Please remove these links (OR) put rel=nofollow in the anchor tag

<a href="view-source:" target='_blank'>view-source: http://www.zoho.com/survey/" rel="nofollow" target="_blank"></a>

Regards,

Velu