Nitish,
JFBConnect only requests the permissions needed based on your configuration. If you're importing all the information from a user's profile into another extension, that will request more permissions. If you have Open Graph Actions configured to post automatically for a user, that will request more permissions. If you have anything in the "Additional Permission Requests" box, that will add more permissions.
The notice from Facebook is just to let you know that you're requesting a lot and to pare them back, if you can. It's up to you if you want to.
Thanks,
Alex