[wwwdocs] Remove dead reference from gcc-4.3/porting_to.html

[Gerald Pfeifer]

I tried to find a new URL, but failed.

Committed.

Gerald

Index: gcc-4.3/porting_to.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.3/porting_to.html,v
retrieving revision 1.12
diff -u -r1.12 porting_to.html
--- gcc-4.3/porting_to.html	28 Jun 2014 22:44:29 -0000	1.12
+++ gcc-4.3/porting_to.html	14 Nov 2015 20:53:00 -0000
@@ -525,10 +525,6 @@
 </p>
 
 <p>
-Martin Michlmayr, <a href="http://www.cyrius.com/journal/gcc">GCC 4.3 related build problems</a>
-</p>
-
-<p>
 Brian M. Carlson, <a href="http://crustytoothpaste.ath.cx/~bmc/blog/entries/">GCC 4.3: Declaration of...Changes Meaning of...
 </a>
 </p>