Remove unused constants from (Styled/Legacy)PlayerView

These were added in
https://github.com/androidx/media/commit/b57aa34b66554097b0ea2296b05c828847e1fdd2
and then not removed when the rest of the code was removed in
https://github.com/androidx/media/commit/0b0277af5001e5e669b007d33dcfffbf6e9d26db

PiperOrigin-RevId: 432419684

libraries/ui/src/main/java/androidx/media3/ui/PlayerView.java

@@ -227,8 +227,6 @@ public class PlayerView extends FrameLayout implements AdViewProvider {
   private boolean controllerHideOnTouch;
   private boolean controllerHideOnTouch;
   private int textureViewRotation;
   private int textureViewRotation;
   private boolean isTouching;
   private boolean isTouching;
-  private static final int PICTURE_TYPE_FRONT_COVER = 3;
-  private static final int PICTURE_TYPE_NOT_SET = -1;
 
 
   public PlayerView(Context context) {
   public PlayerView(Context context) {
     this(context, /* attrs= */ null);
     this(context, /* attrs= */ null);