Clean up hints after a new hint was introduced

pkg/analyzer/lib/src/task/html_work_manager.dart

Index: pkg/analyzer/lib/src/task/html_work_manager.dart
diff --git a/pkg/analyzer/lib/src/task/html_work_manager.dart b/pkg/analyzer/lib/src/task/html_work_manager.dart
index b0e52bbd658d6b104fd67dfdfbbcec809226da4f..07dfb294a7cab6d73ddd9b257b3049d2d8bfd525 100644
--- a/pkg/analyzer/lib/src/task/html_work_manager.dart
+++ b/pkg/analyzer/lib/src/task/html_work_manager.dart
@@ -8,13 +8,7 @@ import 'dart:collection';
 
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/generated/engine.dart'
-    show
-        AnalysisEngine,
-        AnalysisErrorInfo,
-        AnalysisErrorInfoImpl,
-        AnalysisOptions,
-        CacheState,
-        InternalAnalysisContext;
+    show AnalysisEngine, AnalysisErrorInfo, CacheState, InternalAnalysisContext;
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/utilities_collection.dart';