Due to Facebook’s continuous changes and “improvements”, (as of 03/01/12)this method is no longer effective. Therefore, watch for an app I am designing that will give you the control to remove friends just by clicking a checkbox.
Watch for this new project on my programming blog CodeSlayer2010
go to your profile page (not home page)
>click account (u will see edit friends)
>click edit friends
>click all connections (far left column under Facebook logo)
>then all ur friends come up with an X next to them. click the x to remove which friends you want. hope i’ve been of help 🙂