Cleanup coroutine code to not use InlineExecutor
Cleanup coroutine code to not use InlineExecutor

Reviewed By: yfeldblum

Differential Revision: D16594071

fbshipit-source-id: 78755bc64f22b28f89958064184c1fdf35b1bb85

facebook/folly,facebook/folly,facebook/folly,facebook/folly,facebook/folly