By Julia Payne and Dmitry Zhdannikov LONDON (Reuters) -Global energy trader Vitol Group made a record net profit of just over $4 billion last year, sources familiar with the matter said, as oil, natural gas and other commodity prices soared. Vitol, the world’s biggest independent oil trader, declined to comment. The unaudited result beats its previous record net profit in 2020, when oil markets were upended by the COVID-19 pandemic. Bloomberg reported Vitol made $3.2 billion in 2020. The company does not disclose its net profit. Last week, Vitol said revenues leapt to $279 billion in 2021 as o…