removed duplicate diffutils entities for appendix b

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@1056 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

index.xml

@@ -529,8 +529,6 @@
 <!ENTITY ab-gettext-dep SYSTEM "appendixb/gettext-dep.xml">
 <!ENTITY ab-kbd SYSTEM "appendixb/kbd.xml">
 <!ENTITY ab-kbd-dep SYSTEM "appendixb/kbd-dep.xml">
-<!ENTITY ab-diffutils SYSTEM "appendixb/diffutils.xml">
-<!ENTITY ab-diffutils-dep SYSTEM "appendixb/diffutils-dep.xml">
 <!ENTITY ab-e2fsprogs SYSTEM "appendixb/e2fsprogs.xml">
 <!ENTITY ab-e2fsprogs-dep SYSTEM "appendixb/e2fsprogs-dep.xml">
 <!ENTITY ab-lilo SYSTEM "appendixb/lilo.xml">