Removed DARTIUM codegen for IDLS (sdk/lib/dartium)

tools/dom/templates/html/impl/impl_RadioNodeList.darttemplate

Index: tools/dom/templates/html/impl/impl_RadioNodeList.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_RadioNodeList.darttemplate b/tools/dom/templates/html/impl/impl_RadioNodeList.darttemplate
index 5d5569da6f1be4bcde07705bfdd59b32c7766b9d..d2720f744d993cdf6158a52fed473a8b5c5c4d04 100644
--- a/tools/dom/templates/html/impl/impl_RadioNodeList.darttemplate
+++ b/tools/dom/templates/html/impl/impl_RadioNodeList.darttemplate
@@ -4,13 +4,7 @@
 
 part of $LIBRARYNAME;
 
-$if DART2JS
 // Omit RadioNodeList for dart2js.  The Dart Form and FieldSet APIs don't
 // currently expose an API the returns RadioNodeList.  The only use of a
 // RadioNodeList is to get the selected value and it will be cleaner to
 // introduce a different API for that purpose.
-$else
-$(ANNOTATIONS)$(NATIVESPEC)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS$IMPLEMENTS {
-$!MEMBERS
-}
-$endif