[wwwdocs] Remove two company links

[Gerald Pfeifer <gerald at pfeifer dot com>]

My link checker spotted some redirects, and so I noticed these
two old links (2002 and 2000), and since we haven't had such in
any later announcements (and generally avoid them), I applied
the below.

Of course we have, and will keep, deep links such as Nick's blog.

Gerald

Index: news/dfa.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/news/dfa.html,v
retrieving revision 1.7
diff -u -r1.7 dfa.html
--- news/dfa.html	29 Dec 2016 11:49:46 -0000	1.7
+++ news/dfa.html	23 Mar 2017 08:18:32 -0000
@@ -10,8 +10,8 @@
 <p>Original April 30, 2002.<br />
 Last Updated May 5, 2002</p>
 
-<p>We are pleased to announce that Vladimir Makarov, of <a
-href="https://www.redhat.com";>Red Hat</a>, has contributed support
+<p>We are pleased to announce that Vladimir Makarov, of
+Red Hat, has contributed support
 for using Deterministic Finite Automata (DFA) to describe structural
 hazards in processor pipelines to the instruction scheduler.   This
 work is based on literature from various sources, including, but not
Index: news/ssa.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/news/ssa.html,v
retrieving revision 1.8
diff -u -r1.8 ssa.html
--- news/ssa.html	29 Dec 2016 11:49:46 -0000	1.8
+++ news/ssa.html	23 Mar 2017 08:18:32 -0000
@@ -12,8 +12,7 @@
 
 <p>We are pleased to announce that 
 CodeSourcery, LLC
-and 
-<a href="https://www.redhat.com";>Cygnus, a Red Hat company</a> have
+and Cygnus, a Red Hat company have
 contributed an implementation of the static single assignment (SSA)
 representation for the GCC compiler.  SSA is used in many modern
 compilers to facilitate a wide range of powerful optimizations.  Now