When you unfollow someone, you won't see their posts in your News Feed, but you'll still be friends with them. To unfollow a person, Page or group: Click in the top-right corner of Facebook. Select News Feed Preferences.
To unfollow a person, Page or group directly:
Go to the profile, Page or group you want to unfollow
Hover over Following (on a profile or Page) or click Joined (in a group) near their cover photo
Select Unfollow