Removed duplicate ncurses entry

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@725 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

Attic/appendixc/packages.xml

@@ -37,7 +37,6 @@ package quicker.
 &ac-manpages-patch;
 &ac-findutils-patch;
 &ac-ncurses;
-&ac-ncurses;
 &ac-ncurses-patch;
 &ac-vim;
 &ac-bison;