Remove --as-needed configure test

[Joseph S. Myers]

On Tue, 26 Jun 2012, Jürg Billeter wrote:

> Is there a concrete case where your change fixes the build or was this
> just cleanup in preparation for dropping the libgcc_s build dependency?

It's cleanup for dropping the dependency.  As far as I know, libgcc_eh.a 
and libgcc_s.so are always built together - either both are built, or 
neither is built - and there was already a dependency on libgcc_eh.  The 
aim of the patch series is to eliminate the dependency on both those 
libraries, so that a minimal static-only libgcc can be used to build 
glibc.

-- 
Joseph S. Myers
joseph@codesourcery.com