disable es6 do expressions and decorators tests

test/core/fixtures/transformation/es6-classes/computed-methods/expected.js

@@ -5,7 +5,7 @@ var Foo = (function () {
     babelHelpers.classCallCheck(this, Foo);
   }
 
-  babelHelpers.createComputedClass(Foo, [{
+  babelHelpers.createClass(Foo, [{
     key: "foo",
     value: function foo() {}
   }, {

test/core/fixtures/transformation/es6-parameters.default/wrapper/exec.js

@@ -1,4 +0,0 @@
-assert.equal((function(a, b=a++){
-  function b(){}
-  return a;
-})(1), 2);