[selectors-api] Republish with just a link to DOM4

Hi,

http://www.w3.org/TR/selectors-api2/ currently contains a full spec, and 
the following in the "Status of this Document" section:

> Note: the Web Applications Working Group is no longer actively
> working on this specification. However, its features will be included
> in the DOM4 specification that is being developed by the HTML Working
> Group.

This may not be prominent enough, despite the bold text. I suspect many 
readers just skip the "Status of this Document" section and go read the 
spec. Keeping around out-of-date spec text at a non-dated URL is misleading.

I suggest that selectors-api2 is republished with only that paragraph, 
whatever boilerplate is needed, and a link to the new location for this 
spec. In particular, do not include the (now out-of-date) definitions.

-- 
Simon Sapin