Revert "Introduces `ParserOptions`."

pkg/compiler/lib/src/parser/class_element_parser.dart

Index: pkg/compiler/lib/src/parser/class_element_parser.dart
diff --git a/pkg/compiler/lib/src/parser/class_element_parser.dart b/pkg/compiler/lib/src/parser/class_element_parser.dart
index ab3516e9bce955051e769b2b407c610025f4f005..319cba59c96049d927c23a41b0eb629a93c6bb7d 100644
--- a/pkg/compiler/lib/src/parser/class_element_parser.dart
+++ b/pkg/compiler/lib/src/parser/class_element_parser.dart
@@ -9,14 +9,12 @@ import '../tokens/token.dart' show
 
 import 'listener.dart' show
     Listener;
-import '../options.dart' show
-    ParserOptions;
 import 'partial_parser.dart' show
     PartialParser;
 
 class ClassElementParser extends PartialParser {
-  ClassElementParser(Listener listener, ParserOptions options)
-      : super(listener, options);
+  ClassElementParser(Listener listener)
+      : super(listener, enableConditionalDirectives: false);
 
   Token parseClassBody(Token token) => fullParseClassBody(token);
 }