fix(transpile): fix usage of int and references to assert module

modules/rtts_assert/src/rtts_assert.es6

@@ -230,13 +230,6 @@ function returnType(actual, T) {
   return actual;
 }
 
-// `int` is not a valid JS type, and traceur will leave
-// it untouched. However, we want to be able to use it,
-// so we provide it as a global
-var intType = _global['int'] = define('int', function(value) {
-  return typeof value === 'number' && value%1 === 0;
-});
-
 // TODO(vojta): define these with DSL?
 var string = type.string = define('string', function(value) {
   return typeof value === 'string';
@@ -362,7 +355,6 @@ assert.fail = fail;
 assert.string = string;
 assert.number = number;
 assert.boolean = boolean;
-assert.int = intType;
 
 // custom types
 assert.arrayOf = arrayOf;

modules/rtts_assert/test/rtts_assert_spec.es6

@@ -10,8 +10,7 @@
 //   - [assert.structure](#assert-structure)
 // - [Integrating with Traceur](#integrating-with-traceur)
 
-import {assert} from 'rtts_assert/rtts_assert';
-
+// Note: `assert` gets automatically included by traceur!
 
 export function main() {
 
@@ -370,27 +369,6 @@ describe('Traceur', function() {
     });
   });
 
-  // Note: `int` is not part of JS types, but rtts_assert exposes a global
-  // so that it can be used as well.
-  describe('int', function() {
-
-    it('should pass', function() {
-      var x:int = 10;
-    });
-
-    it('should fail', function() {
-      expect(() => {
-        var x:int = 'ok';
-      }).toThrowError('Expected an instance of int, got "ok"!');
-    });
-
-    it('should fail', function() {
-      expect(() => {
-        var x:int = 12.3;
-      }).toThrowError('Expected an instance of int, got 12.3!');
-    });
-
-  });
 
   describe('generics', function() {