Hmm, after your comment, I just checked Android and it seems as if it's still there for developers to choose to add or not...https://developer.android.com/training/basics/network-ops/co...

But perhaps you were talking about as a user of Android (not an app developer), you no longer have the option to deny a specific app from connecting to the internet. Is that what you meant?

I don't think that option is honoured any longer.

It is not even visible to the user.