rn: start removing defaultURL

react/features/app/components/AbstractApp.js

  */
 export type Props = {
 
-    /**
-     * The default URL {@code AbstractApp} is to open when not in any
-     * conference/room.
-     */
-    defaultURL: string,
-
     /**
      * XXX Refer to the implementation of loadURLObject: in
      * ios/sdk/src/JitsiMeetView.m for further information.

react/features/app/functions.native.js

 
 import { NativeModules } from 'react-native';
 
-import { getAppProp } from '../base/app';
 import { toState } from '../base/redux';
 import { getServerURL } from '../base/settings';
 
 export function getDefaultURL(stateful: Function | Object) {
     const state = toState(stateful);
 
-    return getAppProp(state, 'defaultURL') || getServerURL(state);
+    return getServerURL(state);
 }
 
 /**