Apple is expected to discontinue its iPad 2 “in the near future,” according to AppleInsider. Sources said the decision was made to decrease production as customers are “resoundingly” buying more of the iPad Air and iPad mini. The second-generation iPad is currently the only $399 full-sized iPad option on the market, with only the 16GB model offered at this point — the 16GB Wi-Fi + Cellular version is also sold for $529. Released…