BRITNEY'S ATTORNEY: I QUIT (CelebTV.com, January 02, 2008)Heather Mills is not the only recent celebrity to have problems keeping her lawyer. Now Britney Spears' latest attorney wants out of Britney's custody dispute."CelebTV.com is the first to reveal that Britney Spears' divorce attorney, Sorrell Trope, is seeking to drop his troubled client. On Jan. 2, Trope filed a motion in L.A. Superior