Delete CPS IR

tests/compiler/dart2js/cps_ir/expected/argument_refinement_6.js

Index: tests/compiler/dart2js/cps_ir/expected/argument_refinement_6.js
diff --git a/tests/compiler/dart2js/cps_ir/expected/argument_refinement_6.js b/tests/compiler/dart2js/cps_ir/expected/argument_refinement_6.js
deleted file mode 100644
index 953fc10db047a0795fdec1840897a36efbd2c204..0000000000000000000000000000000000000000
--- a/tests/compiler/dart2js/cps_ir/expected/argument_refinement_6.js
+++ /dev/null
@@ -1,19 +0,0 @@
-// Expectation for test: 
-// main() {
-//   var x = int.parse('1233');
-//   var y = int.parse('1234');
-//   print(x is num);
-//   print(y is num);
-//   print(x << y);
-//   print(x is num);
-//   print(y is num); // will be compiled to `true` if we know the type of `y`.
-// }
-
-function() {
-  var x = P.int_parse("1233", null, null), y = P.int_parse("1234", null, null);
-  P.print(typeof x === "number");
-  P.print(typeof y === "number");
-  P.print(J.$shl$n(x, y));
-  P.print(true);
-  P.print(true);
-}