Use Fmt.iter_bindings in SimpleShape
Use Fmt.iter_bindings in SimpleShape

Reviewed By: jvillard

Differential Revision: D39935082

fbshipit-source-id: 2157820679545ddf972d6fe1db6064f3ff2564fe

facebook/infer,facebook/infer,facebook/infer,facebook/infer,facebook/infer,facebook/infer,facebook/infer