Summary: This is the first diff in an effort to remove Geolocation from React Native. This diff removes the globally injected navigator.geolocation feature and instead requires explicit importing of `Geolocation`. When using Web APIs, people will need to patch `navigator.geolocation` on their own from now on.
Reviewed By: sahrens
Differential Revision: D14692386
fbshipit-source-id: c57b290b49728101250d726d67b1956ff23a9a92