fix(flutter): 底栏右侧改为清屏

lib/pages/player/widgets/player_overlay_models.dart

@@ -87,7 +87,6 @@ class PlayerOverlayActions {
     required this.onMore,
     required this.onScrubStart,
     required this.onSeek,
-    this.onPip,
   });
 
   /// 返回上一页。
@@ -131,7 +130,4 @@ class PlayerOverlayActions {
 
   /// 提交进度跳转。
   final Future<void> Function(Duration)? onSeek;
-
-  /// 进入小窗播放。
-  final VoidCallback? onPip;
 }