Hedge funds trimmed bullish oil bets for the first time in six weeks, losing faith in a swift recovery as Russia boosted output to the highest since the Soviet Union collapsed. WTI decreased 1.3 percent in the report week to $45.23 a barrel on the New York Mercantile Exchange. It settled at $45.54 Friday. U.S. crude stockpiles, already about 100 million barrels above the five-year average, may swell further. Stockpiles have climbed...