You can disable feedback review option from your particular post/page.

How to do:
Step 1 Go to Posts/Pages menu of WordPress, a new sub-menu will display, click on All Posts/All Pages.
Step 2 A list of all posts/page will display on a new window.
Step 3 Choose post/page you want to disable feedback option and click on Edit link of post/page.
Step 4 On the right side of edit page scroll down on Was This Helpful section/Meta Box.
Step 5 Tick on Disable Reviews and click on Update/Publish button of post/page.
Check the post/page where you disable feedback option.

Video Tutorial