refactor(google-maps): remove unnecessary modules

Removes the `GoogleMapModule` and `MapMarkerModule` since they're redundant.

Author: crisbeto

src/google-maps/google-map/google-map-module.ts

@@ -24,7 +24,7 @@ import {
 import {BehaviorSubject, combineLatest, Observable, Subject} from 'rxjs';
 import {map, shareReplay, take, takeUntil} from 'rxjs/operators';
 
-import {MapMarker} from '../map-marker/index';
+import {MapMarker} from '../map-marker/map-marker';
 
 interface GoogleMapsWindow extends Window {
   google?: typeof google;

src/google-maps/google-map/google-map.ts

@@ -8,18 +8,14 @@
 
 import {NgModule} from '@angular/core';
 
-import {MapMarker, MapMarkerModule} from './map-marker/index';
-import {GoogleMap, GoogleMapModule} from './google-map/index';
+import {MapMarker} from './map-marker/map-marker';
+import {GoogleMap} from './google-map/google-map';
+
+const COMPONENTS = [GoogleMap, MapMarker];
 
 @NgModule({
-  imports: [
-    GoogleMapModule,
-    MapMarkerModule,
-  ],
-  exports: [
-    GoogleMap,
-    MapMarker,
-  ],
+  declarations: COMPONENTS,
+  exports: COMPONENTS,
 })
 export class GoogleMapsModule {
 }

src/google-maps/google-map/index.ts

@@ -6,6 +6,6 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-export {GoogleMap} from './google-map/index';
-export {MapMarker} from './map-marker/index';
-export * from './google-maps-module';
+export {GoogleMap} from './google-map/google-map';
+export {MapMarker} from './map-marker/map-marker';
+export {GoogleMapsModule} from './google-maps-module';