That thread is one of them, yes. As I mentioned, it does still exist, it wasn't deleted. It can be linked from comments in other stories. But it was removed from the global front page, and from the r/wtf and r/technology listings, and from their internal search results (which I believe is standard for removing stories, which is not uncommon in general).
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The canonical test terms seem to be "blowjob" and "anal sex", though it will be interesting to see what else emerges as effected.
After work, you can test for yourself [NSFW]:
https://www.google.ca/search?q=blowjob&tbm=isch
https://www.google.com/search?q=blowjob&tbm=isch
Make sure to turn "Safe Search: Off" for .ca -- you will notice there in no longer any such option for .com