feat(mobile): use Weblate for i18n (2) (#17620)

* feat(mobile): use Weblate for i18n (2)

* remove old translation files

* dedup keys

* remove migration report

* chore

* remove localizely.yml

mobile/lib/widgets/asset_grid/upload_dialog.dart

@@ -7,8 +7,8 @@ class UploadDialog extends ConfirmDialog {
       : super(
           title: 'upload_dialog_title',
           content: 'upload_dialog_info',
-          cancel: 'upload_dialog_cancel',
-          ok: 'upload_dialog_ok',
+          cancel: 'cancel',
+          ok: 'upload',
           onOk: onUpload,
         );
 }