Majalisar Dokokin tarayyar Najeriya ta kamala tantance tsohon gwamnan jihar Rivers, Rotimi Amaechi, daya daga cikin wadanda ake kushewa zabensa da shugaba Muhammadu Buhari ya yi a zaman daya daga cikin wandada za a ba mukamin minister, bisa zargin zarmiya da rufda ciki da dukiyar talakawa.