Clean up type parameters in comments

pkg/analyzer/lib/src/generated/element_resolver.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library analyzer.src.generated.element_resolver;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/syntactic_entity.dart';
@@ skipping 2633 matching lines @@
   @override
   int get precedence => 16;
 
   @override
   Element get propagatedElement => null;
 
   @override
   Element get staticElement => null;
 
   @override
-  dynamic/*=E*/ accept/*<E>*/(AstVisitor/*<E>*/ visitor) => null;
+  E accept<E>(AstVisitor<E> visitor) => null;
 
   @override
   void visitChildren(AstVisitor visitor) {}
 }