clean up models

Signed-off-by: dom <githubaccount56556@proton.me>

lib/models_new/space/space_audio/statistic.dart

@@ -1,17 +1,11 @@
 class Statistic {
-  int? sid;
   int? play;
-  int? collect;
   int? comment;
-  int? share;
 
-  Statistic({this.sid, this.play, this.collect, this.comment, this.share});
+  Statistic({this.play, this.comment});
 
   factory Statistic.fromJson(Map<String, dynamic> json) => Statistic(
-    sid: json['sid'] as int?,
     play: json['play'] as int?,
-    collect: json['collect'] as int?,
     comment: json['comment'] as int?,
-    share: json['share'] as int?,
   );
 }