Google has removed there one of the earliest features in webmaster tool – Content Keyword Report.
Content Keyword Report was the only way to find what Google find from our site while it crawling. It was very useful at early time for SEO analysts and webmasters since it shows whether Google can crawl our site or not or whether our site is hacked.
Google says now we have enough other features in search console to get an idea about what Google crawl in our site. Like Search Analytics and Fetch as Google. Google also informs us about any kind of hacking in our site.
Google says that users where often getting confused about keyword listing in Content Keyword Report.
So Google removed those feature because of those reasons.
Google also advice us to be clear about what our site is about and what we would like to be found for.
Reference URL : https://webmasters.googleblog.com/2016/11/saying-goodbye-to-content-keywords.html?hl=en&visit_id=1-636162771338484097-1727859003&rd=1
Ajesh December 2nd, 2016