➤ Here you can find the instructions on how to disable the product reviews for your Magento store (Magento 2.1.x).
1. In order to do this, log into your Magento store Admin Panel.
2. Go to the Stores >Â Configuration section.
3. Expand the Advanced tab > Advanced. Find the Magento_Review module (use Ctrl + F to simplify the search process).
4. Disable the module.
5. Press the Save Config button.
6. Clear the cache.
See the tutorial on How to manage Product Reviews.