Remove unused import.

Author: rkistner

demos/supabase-todolist/lib/attachments/photo_widget.dart

@@ -1,6 +1,5 @@
 import 'dart:io';
 
-import 'package:camera/camera.dart';
 import 'package:flutter/material.dart';
 import 'package:powersync_flutter_demo/attachments/camera_helpers.dart';
 import 'package:powersync_flutter_demo/attachments/photo_capture_widget.dart';