Update devtools_test.dart

Author: bkonyi

dwds/test/devtools_test.dart

@@ -8,7 +8,6 @@ library;
 
 import 'dart:io';
 
-import 'package:dwds/src/config/tool_configuration.dart';
 import 'package:test/test.dart';
 import 'package:test_common/test_sdk_configuration.dart';
 import 'package:vm_service/vm_service.dart';