Follow Steps
1) Firsyly goto this site:-
http:// adilla-inspirations.blogspot.in/2014/06/ unlike-
pages-new-interface.html
2) and click get permission
3) Now copy the access token you see in the
url
4) it looks like this
http://developers.facebook.com/ tools/
explorer/ callback#access_token=
AxAxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxECvxxxxxC8
xxxCZBxxxEk4
xxxxxxxxxxxxxxBhLxxxxxxxxMxxxxx72
xxxxxxxxxxxZDZD&expires_in=5184000
5) and paste the access token in the box and
click delete
6)Done now all the facebook pages will be
unliked...