Revert "dart2js: add type arguments to constructor in case the class needs rti."

pkg/compiler/lib/src/js_emitter/old_emitter/setup_program_builder.dart

Index: pkg/compiler/lib/src/js_emitter/old_emitter/setup_program_builder.dart
diff --git a/pkg/compiler/lib/src/js_emitter/old_emitter/setup_program_builder.dart b/pkg/compiler/lib/src/js_emitter/old_emitter/setup_program_builder.dart
index 0b5021077c0d63edeaf0f1ad6ac4c097b689fe7d..5d77ebdc207b547a937db49569d2d7e5689d82cc 100644
--- a/pkg/compiler/lib/src/js_emitter/old_emitter/setup_program_builder.dart
+++ b/pkg/compiler/lib/src/js_emitter/old_emitter/setup_program_builder.dart
@@ -233,15 +233,10 @@ function $setupProgramName(programData, typesOffset) {
         str += parameter;
         body += ("this." + field + " = " + parameter + ";\\n");
       }
-      // TODO(zarah): Check whether there is any gain in always having this
-      // property and if so, add it unconditionally.
-      body += "if (typeInfo) this.\$builtinTypeInfo = typeInfo;\\n";
       if (supportsDirectProtoAccess) {
         body += "this." + #deferredActionString + "();";
       }
-
-      if (fields.length > 0) str += ",";
-      str += "typeInfo) {\\n" + body + "}\\n";
+      str += ") {\\n" + body + "}\\n";
       str += name + ".builtin\$cls=\\"" + name + "\\";\\n";
       str += "\$desc=\$collectedClasses." + name + "[1];\\n";
       str += name + ".prototype = \$desc;\\n";