Removed tracking of downloaded files

lib/services/local_sync_service.dart

@@ -258,12 +258,6 @@ class LocalSyncService {
     }
   }
 
-  Future<void> trackDownloadedFile(String localID) async {
-    final downloadedIDs = _getDownloadedFileIDs();
-    downloadedIDs.add(localID);
-    await _prefs.setStringList(kDownloadedFileIDsKey, downloadedIDs);
-  }
-
   List<String> _getDownloadedFileIDs() {
     if (_prefs.containsKey(kDownloadedFileIDsKey)) {
       return _prefs.getStringList(kDownloadedFileIDsKey);

lib/ui/viewer/file/fading_app_bar.dart

@@ -23,7 +23,6 @@ import 'package:photos/services/collections_service.dart';
 import 'package:photos/services/favorites_service.dart';
 import 'package:photos/services/hidden_service.dart';
 import 'package:photos/services/ignored_files_service.dart';
-import 'package:photos/services/local_sync_service.dart';
 import 'package:photos/ui/common/progress_dialog.dart';
 import 'package:photos/ui/create_collection_page.dart';
 import 'package:photos/ui/viewer/file/custom_app_bar.dart';
@@ -443,8 +442,6 @@ class FadingAppBarState extends State<FadingAppBar> {
       }
 
       if (savedAsset != null) {
-        // immediately track assetID to avoid duplicate upload
-        await LocalSyncService.instance.trackDownloadedFile(savedAsset.id);
         file.localID = savedAsset.id;
         await FilesDB.instance.insert(file);
         Bus.instance.fire(