[pushed] wwwdocs: *: Remove unused buildstat pages

[Gerald Pfeifer]

On Mon, 20 Nov 2023, Thomas Schwinge wrote:
>> For GCC 9 to GCC 13 the per-release series buildstat pages have not
>> been populated at all, so remove them and reference from the respective
>> main release pages.
> ACK; I had recently run into such an empty page, and wanted to suggest
> the same.
> 
> We still need to update the docs some more.  Do we just remove all
> references (and related text), and/or refer to the gcc-testresults
> mailing list?

The libstdc++ docs refer to gcc-results and I'll see to add this to the 
web pages where applicable.

> In wwwdocs:
> 
>     htdocs/branching.html:<li>Add <code>buildstat.html</code> and update the toplevel
>     htdocs/branching.html:<code>buildstat.html</code> accordingly.</li>
> 
>     htdocs/faq.html:Reports of <a href="buildstat.html">successful builds</a>
>     htdocs/faq.html-for several versions of GCC are also available at the web site.</p>
> 
>     htdocs/releasing.html-<li>For a new major release, ensure that the build status page is present
>     htdocs/releasing.html:and add a link from the main <code>buildstat.html</code> page.</li>

I have taken care of all these and will look into gcc/doc/install.texi in 
the coming days.

Thanks for bringing this up!

Gerald