By Angeliki Koutantou ATHENS (Reuters) - Greek Prime Minister Antonis Samaras pledged on Saturday to cut taxes and gradually end austerity as he seeks to woo voters and overturn a poll lead by the leftist opposition party Syriza ahead of a snap election. At the helm of a coalition government since 2012, Samaras has pursued unpopular reforms as part of a 240 billion euro ($284.26 billion) EU/IMF ...