WINDSOR, Ontario — Hours after Canadian police removed protesters camped nearly a week near the Ambassador Bridge, a critical U.S.-Canadian border crossing, the bridge reopened for traffic and commerce, the company that owns the bridge and Canadian authorities said. “The Detroit International Bridge Company is pleased to announce that the Ambassador Bridge is now fully open allowing the free flow of commerce between the Canada and US economies once again,” said Esther Jentzen, a representative for the bridge, in an email at 11:05 p.m. “This action follows a state of emergency declared in Ontar…