Update TODO.md

TODO.md

@@ -7,22 +7,13 @@ the best approach would be to [create an
 issue](https://github.com/googlesamples/android-UniversalMusicPlayer/issues) first,
 and then provide a pull request once completed to have your work merged into the project.
 
-Please only supply Kotlin PRs to the 'next' branch.
-
 Service Side Tasks
 ------------------
 
 - Implement rating (ideally "favorite" vs "thumbs up/down").
-- Provide integration with the Google Assistant.
+- Improve integration with the Google Assistant.
 
 UI Tasks
 --------
 
-- Implement logic for handling [FLAG_BROWSABLE](https://developer.android.com/reference/android/support/v4/media/MediaBrowserCompat.MediaItem.html#FLAG_BROWSABLE).
 - Implement a "now playing" UI with current position and skip forward/back 30s ([BottomSheet](https://material.io/guidelines/components/bottom-sheets.html#bottom-sheets-persistent-bottom-sheets)).
-
-Large UI Tasks
---------------
-
-- Add UI module for Android Wear.
-- Add UI module for Android TV with Leanback.