test: update compiled test files

Run

```sh
$ babel test/fixtures/es6-classes/actual.js > test/fixtures/es6-classes/compiled.js

$ babel test/fixtures/virgin/actual.js > test/fixtures/virgin/compiled.js
```

test/fixtures/es6-classes/compiled.js

@@ -1,16 +1,16 @@
 'use strict';
 
-var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
-
 Object.defineProperty(exports, "__esModule", {
   value: true
 });
 
+var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
+
 function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
 
 //
 
-var Animal = (function () {
+var Animal = function () {
   function Animal() {
     _classCallCheck(this, Animal);
   }
@@ -33,6 +33,7 @@ var Animal = (function () {
   }]);
 
   return Animal;
-})();
+}();
 
 exports.Animal = Animal;
+

test/fixtures/virgin/compiled.js

@@ -0,0 +1,11 @@
+"use strict";
+
+ONE.foo = function (bar) {
+  return baz(bar ? 0 : 1);
+};
+
+/* istanbul ignore next */
+if (true) {
+  var a = 5;
+}
+