Use new asyncio methods
Use new asyncio methods

Reviewed By: lawrencelomax

Differential Revision: D19641850

fbshipit-source-id: 58ceaa0b73a4d7861037de8655e91ff57a17bda2

facebook/FBSimulatorControl,facebook/FBSimulatorControl,facebook/FBSimulatorControl,facebook/FBSimulatorControl,facebook/FBSimulatorControl