Don't install demo script that needs additional files to be installed.

--- Makefile.PL.orig	Wed Dec 14 15:16:58 2011
+++ Makefile.PL	Wed Dec 14 15:17:02 2011
@@ -4,6 +4,5 @@ use ExtUtils::MakeMaker;
 WriteMakefile(
     'NAME'	=> 'PostScript::MailLabels',
     'VERSION_FROM' => "lib/PostScript/MailLabels.pm", 
-	EXE_FILES => [qw(demo/print_addrs)],
     'LICENSE'		=> 'perl',
 );