🐛 Fix file upload

lib/models/file_pool.dart

@@ -34,20 +34,4 @@ extension SnFilePoolList on List<SnFilePool> {
     }
     throw ArgumentError('Unexpected response format: $data');
   }
-
-  List<SnFilePool> filterValid() {
-    return where((p) {
-      final accept = p.policyConfig?['accept_types'];
-
-      if (accept is List) {
-        final acceptsOnlyMedia = accept.every((t) =>
-            t is String &&
-            (t.startsWith('image/') ||
-                t.startsWith('video/') ||
-                t.startsWith('audio/')));
-        if (acceptsOnlyMedia) return false;
-      }
-      return true;
-    }).toList();
-  }
 }