A Kroger grocery store parking lot with designated spaces for customer pick up. Jeffrey Greenberg/Universal Images Group via Getty ImagesMaybe the robots aren’t coming for us after all, as grocery retailer Kroger confirmed its retreat from its once-ambitious partnership with fulfillment specialist Ocado.The decision may have delivered a windfall to the U.K. automation specialist but underscores mounting pressures facing the largest traditional grocer in the U.S. as it rethinks how best to serve online custo ...