Anyone who was hoping to sneak in an Internet voice call over JetBlue’s new in-flight Wi-Fi service had better make other plans, because the airline now plans to enforce its ban on voice calls in the air. Amid the broad outcry against onboard voice last week, JetBlue opened up a thin sliver of daylight for flyers who want to make calls from a commercial airliner. On planes with its Sky-Fi in-cabin Wi-Fi system, JetBlue said it would discourage VoIP (voice over Internet Protocol) but would not “police” use of the service. Instead, the company would handle complaints from passengers on a case-by-case basis. On Saturday, just days after Sky-Fi became generally available on Wi-Fi-equipped planes, JetBlue shut that glimmer of hope for big talkers. “We’ve heard from many customers and the majority have shared that they do not want voice or video calls allowed onboard,” JetBlue said in a statement.