Remove navigator.geolocation, use Geolocation

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

Libraries/Geolocation/Geolocation.js

@@ -29,11 +29,11 @@ type GeoConfiguration = {
   skipPermissionRequests: boolean,
 };
 
-type GeoOptions = {
+export type GeoOptions = {
   timeout?: number,
   maximumAge?: number,
   enableHighAccuracy?: boolean,
-  distanceFilter: number,
+  distanceFilter?: number,
   useSignificantChanges?: boolean,
 };