Apple Inc. (NASDAQ:AAPL) has halted the sale of smartwatches that come with blood oxygen tracking. However, this move could reportedly influence the company’s future healthcare ventures, said Mark Gurman, in the latest installment of his weekly newsletter “Power On.” What Happened: Apple’s decision followed a federal appeals court’s denial of a request for an extended halt on the International Trade Commission ban. Faced with the alternatives of either pulling the watch off the market or disabling the feature, Apple chose the latter for its U.S. clientele. This marks the first instance of a fi…