By Tom Sims and Frank Siebelt FRANKFURT (Reuters) -Deutsche Bank delivered its most profitable year in a decade on the back of a dealmaking bonanza, strengthening Chief Executive Christian Sewing’s hand as he fine tunes a new strategy and tackles costly competition for talent. Analysts had forecast a fourth quarter loss and shares in Germany’s largest bank rose by more than 5% after the surprise finale to 2021, which marked the second straight annual profit following years of losses. Deutsche had to pay up to keep its traders and dealmakers on board, with compensation at its investment bank so…