A teen thug allegedly admitted to police that he knew he “was guilty” of slashing a Queens mom of three on her way to work after cops showed him a surveillance video of the vicious attack, according to prosecutors. Luis Emmanuel Valencia Ponce, 18, allegedly aired the stunning admission of guilt to detectives after police showed him footage of Lisette Ramales being stabbed at an East Elmhurst bus stop on Monday morning, Assistant District Attorney Isabelle Dudek told the courtroom during his arraignment at Queens Criminal Court late Thursday. “If I’m being honest with you, I don’t remember running towards...