Revert "dart2js cps: 'is' checks on types with type arguments."

pkg/compiler/lib/src/cps_ir/cps_ir_nodes_sexpr.dart

Index: pkg/compiler/lib/src/cps_ir/cps_ir_nodes_sexpr.dart
diff --git a/pkg/compiler/lib/src/cps_ir/cps_ir_nodes_sexpr.dart b/pkg/compiler/lib/src/cps_ir/cps_ir_nodes_sexpr.dart
index 2d5294beb2006ee91d10bf77729bd49975cbb54c..ff45c31175f9f999a0cb0e6fc08da81bcb25965f 100644
--- a/pkg/compiler/lib/src/cps_ir/cps_ir_nodes_sexpr.dart
+++ b/pkg/compiler/lib/src/cps_ir/cps_ir_nodes_sexpr.dart
@@ -290,12 +290,10 @@ class SExpressionStringifier extends Indentation implements Visitor<String> {
   }
 
   String visitTypeOperator(TypeOperator node) {
-    String value = access(node.value);
+    String receiver = access(node.receiver);
     String cont = access(node.continuation);
     String operator = node.isTypeTest ? 'is' : 'as';
-    String typeArguments = node.typeArguments.map(access).join(' ');
-    return '$indentation(TypeOperator $operator $value ${node.type} '
-           '($typeArguments) $cont)';
+    return '$indentation(TypeOperator $operator $receiver ${node.type} $cont)';
   }
 
   String visitLiteralList(LiteralList node) {