configure: remove obsoleted $sparc_cpu variable

9b9c37c ("tcg-sparc: Assume v9 cpu always, i.e. force v8plus in
32-bit mode.", 2012-09-21) removed the need for this variable and
most of the references to it, but this one.

Remove defunct code, no effect or functionality change expected.

Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190709234330.89699-1-carenas@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

configure

@@ -6384,9 +6384,6 @@ if test "$vnc" = "yes" ; then
     echo "VNC JPEG support  $vnc_jpeg"
     echo "VNC PNG support   $vnc_png"
 fi
-if test -n "$sparc_cpu"; then
-    echo "Target Sparc Arch $sparc_cpu"
-fi
 echo "xen support       $xen"
 if test "$xen" = "yes" ; then
   echo "xen ctrl version  $xen_ctrl_version"