Delete CPS IR

tests/compiler/dart2js/cps_ir/expected/closures_9.js

-// Expectation for test: 
-// main() {
-//   var a;
-//   for (var i=0; i<10; i++) {
-//     a = () => i;
-//   }
-//   print(a());
-// }
-
-function() {
-  var a = null, i = 0, line;
-  for (; i < 10; a = new V.main_closure(i), ++i)
-    ;
-  line = H.S(a.call$0());
-  if (typeof dartPrint == "function")
-    dartPrint(line);
-  else if (typeof console == "object" && typeof console.log != "undefined")
-    console.log(line);
-  else if (!(typeof window == "object")) {
-    if (!(typeof print == "function"))
-      throw "Unable to print message: " + String(line);
-    print(line);
-  }
-}