Hong Kong’s unemployment rate edged down marginally to 6.1 per cent in July amid a government wage subsidy, but the welfare minister warned on Wednesday that the jobless threat had yet to go away.In the rolling three-month period between May and July, the unemployment rate stood at 6.1 per cent, compared with 6.2 per cent for April to June, the Census and Statistics Department revealed on Wednesday.The slight improvement ended a nine-month run of decline as the city’s recession continued to…