Attorneys representing a former spokesman for#160;South Sudanese rebel leader Riek Machar on treason charges have withdrawn from the case, saying James Gatdet should have been freed under the cease-fire agreement signed last month.#160; Kenyan authorities#160;deported Gatdet to Juba#160;in late 2016, shortly after he urged the removal of a Kenyan general in charge of peacekeeping forces when violence broke out in South Sudan's...