KARLSRUHE, Germany (Reuters) - Facebook must comply with an order by Germany's antitrust watchdog to curb data collection from users, a top German court ruled on Tuesday, in a setback for the U.S. social network company.The Federal Court's interim order, which suspends a decision by a lower court, backs the Federal Cartel Office's original view that Facebook had abused its market dominance to gather information about users without their consent."I'm delighted by this decision," said cartel..