Removed a no more needed entity.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@3714 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

general.ent

@@ -10,7 +10,6 @@
 <!ENTITY hints-index "&lfs-root;hints/list.html">
 <!ENTITY patches-root "&lfs-root;patches/lfs/cvs/unstable/">
 <!ENTITY wiki-root "http://wiki.linuxfromscratch.org/">
-<!ENTITY http-down "http://downloads.linuxfromscratch.org/">
 <!ENTITY freshmeat "http://freshmeat.net/projects/">
 
 <!ENTITY buildtime "Approximate build time">