Oil was little changed in London as the International Monetary Fund cut its global-growth outlook by the most in three years. Brent gained 0.1 percent after slumping by 2.7 percent yesterday. The world economy will grow 3.5 percent in 2015, down from the 3.8 percent pace projected in October, the Washington-based IMF said in its quarterly global outlook yesterday. Prices pared earlier losses as German investor confidence jumped to the highest level in 11 years. Futures declined in New York . Oil slid more than 50 percent since June as the U.S. pumped at the fastest pace in more than three decades and the Organization of Petroleum Exporting Countries resisted calls to cut output. The IMF’s downgrade, following reduced growth expectations published by the World Bank on Jan. 13, undermines speculation that lower oil prices would spur economic activity. “The IMF revision is part of the general growth downgrade […]