LONDON (Reuters) – Britain told the European Union on Tuesday there was no reason for its negative reaction to London’s plan to override some post-Brexit trade rules for Northern Ireland, after Brussels threatened legal action. Britain published legislation on Monday which would scrap checks and challenge the role played by the European Union’s court in the region. It says its plan is legal, but Brussels believes any unilateral change may breach international law. European Commission Vice-President Maros Sefcovic warned that the EU would consider launching new infringement procedures against B…