Both Verizon’s and Apple’s websites have stopped taking pre-orders for CDMA iPhone 4 units. According to an announcement from Verizon, pre-orders were halted at 8:10 p.m. EST yesterday, ending “the most successful first day sales in the history of the company.” Verizon’s website now indicates that customers—presumably all customers, and not just current Verizon customers—will be able to order the phone online…