Crude prices edged higher on Friday, but retreated from session highs and were headed for another weekly decline on worries that oversupply would weigh on the U.S. market while trade disputes and slowing global economic growth would slow demand for oil. U.S. crude was on track for its seventh consecutive weekly decline and global benchmark Brent was set to drop for a third week. “One of the biggest concerns out there is that China’s demand numbers are coming down if China’s GDP growth is slowing,” said Tariq Zahir, managing member at Tyche Capital in New York. Brent crude oil futures LCOc1 were up 9 cents at $71.52 a barrel by 1:04 p.m. EDT (1604 GMT), after rising over $1 to […]