By petitioning the goverment maybe ?
Shoot Zuckerburg, and hope for the best ?
Possibly by giving everyone a "real" life .. and "real" friends ?
Sabotaging the trans-atlantic cables ?
I'm guessing by now you wish you'd phrased that differently
Cr*p though it is, Facebook is just a website like any other .. what do you mean by "get rid of" ?
I guess the easiest method would be to sign onto facebook .. change email setting to a non existent account, then change your password to a massively random one you'll easily forget .. job done