fix(storage): remove unnecessary http_parser import

Remove unnecessary import of package:http_parser/http_parser.dart
as MediaType is already provided by package:http/http.dart.

Fixes analyzer warning: unnecessary_import

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: grdsdev

packages/storage_client/lib/src/fetch.dart

@@ -4,7 +4,6 @@ import 'dart:typed_data';
 
 import 'package:http/http.dart' as http;
 import 'package:http/http.dart';
-import 'package:http_parser/http_parser.dart' show MediaType;
 import 'package:logging/logging.dart';
 import 'package:mime/mime.dart';
 import 'package:retry/retry.dart';