Removed a warning which doesn't apply anymore.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@2190 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter02/aboutlfs.xml

@@ -30,11 +30,7 @@ command).</para>
 
 <para>If you plan to use $LFS, do not forget to set the LFS variable at all 
 times. If the variable is not set and is used in a command, $LFS will 
-be ignored and whatever is left will be executed. A command like
-<userinput>echo "root:x:0:0:root:/root:/bin/bash" &gt; 
-$LFS/etc/passwd</userinput> without the LFS variable set will
-re-create your host system's /etc/passwd file. Simply put: it will
-destroy your current password database file.</para>
+be ignored and whatever is left will be executed.</para>
 
 <para>One way to make sure that $LFS is set at all times is adding it to
 the /root/.bash_profile and /root/.bashrc files so that every time