Time Warner Cable customers, if you’ve ever dreamed of chucking your set-top box, that vision is on track to becoming reality soon. Chief Operating Officer Robert Marcus, who will become the cable company’s chief executive next year, said at a conference Wednesday that Time Warner Cable should, within about a year, be able to let over-the-top devices replace set-top boxes.”Over the course of the next year or so, we will be knocking down some of the current obstacles that are in the way of not just having the TWC TV experience be a complementary service to the delivery of video via the leased set-top box but also a replacement service so that customers can have nothing but a Roku device or an Xbox and get their video experience,” he said at a Bank of America Merrill Lynch media tech conference in Los Angeles. The company has 15 million set-top boxes deployed. The TWC TV app already pipes in live programming via devices like Roku or Xbox or on Samsung Smart TVs, but they were available as ancillary options in other rooms in the house.