An Irish court on Friday approved the extradition of one of the two Northern Irish men charged with manslaughter in the deaths of 39 Vietnamese people found in the back of a truck near London last year.British authorities are seeking Eamonn Harrison, 23, on charges of human trafficking and immigration offences, as well as the 39 offences of manslaughter in a case that has shone a light on the illicit human smuggling trade.Judge Donald Binchy deferred ordering Harrison’s handover to Britain…