Remove empty line from xz configure command.

git-svn-id: http://svn.linuxfromscratch.org/LFS/branches/systemd@10898 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter06/xz.xml

@@ -46,8 +46,7 @@
 
     <para>Prepare Xz for compilation with:</para>
 
-<screen><userinput remap="configure">
-./configure --prefix=/usr    \
+<screen><userinput remap="configure">./configure --prefix=/usr    \
             --disable-static \
             --docdir=/usr/share/doc/xz-&xz-version;</userinput></screen>