If youre on Facebook, you probably have at least one former high school classmate who seems to never stop overloading your News Feed with crazy political rants or unnecessarily personal life updates. Perhaps youve thought about unfriending this person, or even gone ahead and pulled the trigger. To those of you, we say: You are far from alone. In reality, it appears former high school friends are unfriended more than any other group on Facebook, according to a recent study by Christopher Sibona, a doctoral student at the University of Colorado Denver. …