Unlike All Facebook Page at Once. No need to unlike facebook page one by one. This is the way to get rid of All Facebook Page Posts.
Follow These Steps.
1- Open This Link and Install Chrome Extension.
2- After Installation, You See a New Icon at Top Corner of Your Browser.
3- Open Facebook and click on the icon at the top right corner.
4- Open the “Removal Tools” Tab and Click, Unlike All Facebook Page.
5- Press ‘unlike’ All Pages.
Feel Free To Contact me if you have any Query.