Summary:
We've enabled getters in .flowconfig, so Flow will now understand react-native.js. We no longer need to maintain a separate file for Flow.
cc bestander
Closes https://github.com/facebook/react-native/pull/9892
Differential Revision: D3862560
Pulled By: bestander
fbshipit-source-id: 9efb66bc885dbac80c18b4b5e3cf5362495928a9