Code cleanup: Simplify tests util functions that passes assert as a parameter

Ref: https://github.com/jquery/globalize/pull/351/files#r21450909

---

``` js
util.assertParameterPresence( assert, "currency", function() {
Globalize.currencyFormatter();
});
```

@jzaefferer

> I brought this up before, might be worth another try. Can this be changed to the below?
>
> ``` js
> assert.parameterPresence( "currency", ... );
> ```
>
> The same applies to any other calls that pass assert as a parameter

@rxaviers

> Sorry if I missed it. But, I don't remember such comment. If you say it's better overloading assert, it shall be. Will be tracked as a separate issue #359