refactor: clean up comments and unused code in various files

App.js

@@ -14,14 +14,10 @@ import HomeScreen from './src/screens/HomeScreen';
 import SearchScreen from './src/screens/SearchScreen';
 import CollectionsScreen from './src/screens/AlbumsScreen';
 import SettingsScreen from './src/screens/SettingsScreen';
-
-// Required for OAuth deep link redirect to close the browser and return to the app
 WebBrowser.maybeCompleteAuthSession();
 
 const Stack = createNativeStackNavigator();
 const Tab = createBottomTabNavigator();
-
-// Bottom tab navigator shown after login
 function MainTabs({ route }) {
   const { userId } = route.params || {};
   const { theme } = useTheme();
@@ -73,8 +69,6 @@ function MainTabs({ route }) {
     </Tab.Navigator>
   );
 }
-
-// Root stack navigator
 function AppNavigator() {
   return (
     <Stack.Navigator screenOptions={{ headerShown: false }}>