[Video_Player] Remove the deprecated API reference. (flutter#3669)

Author: zhenqiu1101

packages/video_player/video_player/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 2.0.1
+
+* Remove the deprecated API "exoPlayer.setAudioAttributes".
+
 ## 2.0.0
 
 * Migrate to null safety.

packages/video_player/video_player/android/src/main/java/io/flutter/plugins/videoplayer/VideoPlayer.java

@@ -5,7 +5,6 @@
 
 import android.content.Context;
 import android.net.Uri;
-import android.os.Build;
 import android.view.Surface;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.ExoPlaybackException;
@@ -222,12 +221,8 @@ void sendBufferingUpdate() {
 
   @SuppressWarnings("deprecation")
   private static void setAudioAttributes(SimpleExoPlayer exoPlayer, boolean isMixMode) {
-    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-      exoPlayer.setAudioAttributes(
-          new AudioAttributes.Builder().setContentType(C.CONTENT_TYPE_MOVIE).build(), !isMixMode);
-    } else {
-      exoPlayer.setAudioStreamType(C.STREAM_TYPE_MUSIC);
-    }
+    exoPlayer.setAudioAttributes(
+        new AudioAttributes.Builder().setContentType(C.CONTENT_TYPE_MOVIE).build(), !isMixMode);
   }
 
   void play() {

packages/video_player/video_player/pubspec.yaml

@@ -1,7 +1,7 @@
 name: video_player
 description: Flutter plugin for displaying inline video with other Flutter
   widgets on Android, iOS, and web.
-version: 2.0.0
+version: 2.0.1
 homepage: https://github.com/flutter/plugins/tree/master/packages/video_player/video_player
 
 flutter: