(Reuters) – Gold prices fell on Wednesday as U.S. Treasury yields gained after Federal Reserve officials insisted on sharper interest-rate hikes to combat inflation, although concerns over the Ukraine crisis slowed bullion’s decline. FUNDAMENTALS * Spot gold was down 0.2% at $1,918.29 per ounce by 0130 GMT. U.S. gold futures also slipped 0.2% to $1,918.40. * Benchmark U.S. 10-year Treasury yields jumped to fresh highs since May 2019. [US/] * Fed officials are helping shape market expectations for sharper interest-rate hikes to curb the surge in inflation, but have not managed to dispel fears t…