Remove unused import

Author: srujzs

dwds/test/fixtures/context.dart

@@ -24,7 +24,6 @@ import 'package:dwds/src/services/expression_compiler_service.dart';
 import 'package:dwds/src/utilities/dart_uri.dart';
 import 'package:dwds/src/utilities/server.dart';
 import 'package:file/local.dart';
-import 'package:frontend_server_common/src/devfs.dart';
 import 'package:frontend_server_common/src/resident_runner.dart';
 import 'package:http/http.dart';
 import 'package:http/io_client.dart';