LONDON (Reuters) – BT, Britain’s biggest broadband and mobile operator, said it had finalised the deal to combine its sports broadcasting unit with Discovery Inc, as it met expectations with a 2% rise in core earnings for the year to end-March. The company, which announced the Discovery tie-up in February, also reconfirmed its outlook for the current year, when it expects core earnings to rise to at least 7.9 billion pounds ($9.6 billion) from 7.6 billion pounds reported on Thursday. BT reported a 2% dip in revenue to 20.9 billion pounds, reflecting declines in its Enterprise and Global units,…