Remove the ability in dart2js to turn off syntax-only generic methods.

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

Index: pkg/compiler/lib/src/parser/partial_parser.dart
diff --git a/pkg/compiler/lib/src/parser/partial_parser.dart b/pkg/compiler/lib/src/parser/partial_parser.dart
index 3e2c0259d73e62b58af3d6fcfc005a5a95cd4622..c5d9d62aa4f60fb01002ecdf64ce3c4e2f149183 100644
--- a/pkg/compiler/lib/src/parser/partial_parser.dart
+++ b/pkg/compiler/lib/src/parser/partial_parser.dart
@@ -5,7 +5,6 @@
 library dart2js.parser.partial;
 
 import '../common.dart';
-import '../options.dart' show ParserOptions;
 import '../tokens/token.dart' show BeginGroupToken, ErrorToken, Token;
 import '../tokens/token_constants.dart' as Tokens show EOF_TOKEN;
 import '../util/characters.dart' as Characters show $CLOSE_CURLY_BRACKET;
@@ -13,8 +12,7 @@ import 'listener.dart' show Listener;
 import 'parser.dart' show Parser;
 
 class PartialParser extends Parser {
-  PartialParser(Listener listener, ParserOptions options)
-      : super(listener, options);
+  PartialParser(Listener listener): super(listener);
 
   Token parseClassBody(Token token) => skipClassBody(token);