By MacDonald Dzirutwe ABUJA (Reuters) – Nigeria’s ruling party, the All Progressives Congress (APC), on Wednesday picked former Lagos State governor Bola Tinubu as its candidate to run for president in elections scheduled for February 2023. President Muhammadu Buhari steps down next year after leading Africa’s most populous country and top oil exporter for the maximum eight years allowed by the constitution. Tinubu, 70, who was in charge of Nigeria’s commercial capital from 1999 to 2007, defeated 13 other candidates including Buhari’s deputy, Vice President Yemi Osinbajo, in the APC primaries….