Remove ForwardingPlayer special case from PlayerControlView.setPlayer

This was originally added in https://github.com/google/ExoPlayer/commit/4fd7d777b669f6adacc3737a7e15b04a57f030fb, but it hasn't done anything
since https://github.com/google/ExoPlayer/commit/98ee159df161c7c8806c0b0490b642738822f6a7 (when the instanceof ExoPlayer check was removed).

PiperOrigin-RevId: 482161662

library/ui/src/main/java/com/google/android/exoplayer2/ui/StyledPlayerControlView.java

@@ -60,7 +60,6 @@ import androidx.recyclerview.widget.RecyclerView;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.ExoPlayerLibraryInfo;
 import com.google.android.exoplayer2.ExoPlayerLibraryInfo;
 import com.google.android.exoplayer2.Format;
 import com.google.android.exoplayer2.Format;
-import com.google.android.exoplayer2.ForwardingPlayer;
 import com.google.android.exoplayer2.Player;
 import com.google.android.exoplayer2.Player;
 import com.google.android.exoplayer2.Player.Events;
 import com.google.android.exoplayer2.Player.Events;
 import com.google.android.exoplayer2.Player.State;
 import com.google.android.exoplayer2.Player.State;
@@ -639,9 +638,6 @@ public class StyledPlayerControlView extends FrameLayout {
     if (player != null) {
     if (player != null) {
       player.addListener(componentListener);
       player.addListener(componentListener);
     }
     }
-    if (player instanceof ForwardingPlayer) {
-      player = ((ForwardingPlayer) player).getWrappedPlayer();
-    }
     updateAll();
     updateAll();
   }
   }