LONDON (Reuters) -British finance minister Rishi Sunak resigned on Tuesday, saying he had reluctantly come to the conclusion that “we cannot continue like this”. “The public rightly expect government to be conducted properly, competently and seriously. I recognise this may be my last ministerial job, but I believe these standards are worth fighting for and that is why I am resigning,” he said on Twitter. In his resignation letter to the prime minister, also posted on his Twitter account, Sunak pointed to “immense challenges” that Britain was facing, adding that the people were “ready to hear t…