By Will Jennings Double Olympic champion Alistair Brownlee remains ‘very confident’ this summer’s triathlon will go ahead as planned in Paris and has urged athletes to ignore reports it could be delayed or cancelled. The swimming leg of the race was thrown into doubt on Wednesday when Paris 2024 president Tony Estanguet admitted it could be removed if heavy rain affects water quality in the River Seine. A recent survey by the Surfrider Foundation Europe charity warned of “alarming” bacteria levels in the Seine but Leeds star Brownlee, who claimed gold in London and Rio, believes it will be bus…