remove codegen_process.pdf from distribution;

--- a/Admin/makedist	Sat Jun 07 19:18:38 2008 +0200
+++ b/Admin/makedist	Sun Jun 08 14:29:09 2008 +0200
@@ -180,6 +180,7 @@
 MOVE=$($FIND Doc \( -type f -a -not -type l -a -not -name isabelle_isar.pdf -a -not -name pghead.pdf -a \( -name \*.dvi -o -name \*.eps -o -name \*.ps -o -name \*.pdf \) -a -print \) | grep -v 'gfx/.*pdf')
 mv -f $MOVE Distribution/doc
 rm Distribution/doc/Isa-logics.eps
+rm Distribution/doc/codegen_process.pdf
 rm -rf Doc
 
 mkdir src contrib