Drop experimental prefix from email hint option

Related to #4134

There are some minor bugs with email hint, but it seem pretty clear that we want to make this happen, and it's 99% there right now.
Would prefer to merge as is, since it's consistent with the surrounding
code, and then take a cleanup / best practice pass as a separate pull
request.

But I'm basically at +0; happy to change it. Just dislike conflating
functional and stylistic patches :)
On Jun 7, 2014 8:00 PM, "Jared Hirsch" <notifications@github.com> wrote:

> In resources/static/include_js/_include.js:
>
> > @@ -536,6 +537,7 @@
> >          opts.siteLogo = passedOptions.siteLogo || undefined;
> >          opts.backgroundColor = passedOptions.backgroundColor || undefined;
> >          opts.experimental_emailHint = passedOptions.experimental_emailHint || undefined;
> > +        opts.email = passedOptions.email || undefined;
>
> Let's please remove the || undefined here and the previous lines, it is
> not good JS form.
>
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> <https://github.com/mozilla/persona/pull/4140/files#r13522136>.
>