How do I remove google contacts?
You have done half the work.

By this query we can understand that this new Google's people details sync should be turned off too together with Google contacts as this new service connecting you with others via some other platforms such as Google+.

Follow these steps:

Go to Contacts app-Open contact's settings(by touching 3 dots on the upper right corner)-Contacts to display(select account from which you want contacts from such as from 'phone contacts' or from a specific 'Google account'.

It's done.

Attaching picture to see inside settings of contacts app.



Note: Be specific with an account as you can see in the picture samsung is taking contacts from all the apps that are telegram,paytm,hike, and even from samsung pay.