Skip bundling for Simulator
Skip bundling for Simulator

Summary:
Following up on the conversation in https://www.prod.facebook.com/groups/reactnativeoss/permalink/1516993445263951/ I currently don't see any good reason to create an offline bundle for simulator builds.
Closes https://github.com/facebook/react-native/pull/5519

Reviewed By: svcscm

Differential Revision: D2859751

Pulled By: mkonicek

fb-gh-sync-id: f70481e447e258f5531de773729fc31d9ebec6f7

eduvon0220/react-native,eduvon0220/react-native,eduvon0220/react-native,eduvon0220/react-native,eduvon0220/react-native,eduvon0220/react-native,eduvon0220/react-native,eduvon0220/react-native