remove removal of /dev/null

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@2059 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter06/makedev-inst.xml

@@ -6,8 +6,7 @@ won't create a directory for you to cd into.</para>
 
 <para>Create the device files by running the following commands:</para>
 
-<para><screen><userinput>rm /dev/null &amp;&amp;
-cp MAKEDEV-&makedev-version; /dev/MAKEDEV &amp;&amp;
+<para><screen><userinput>cp MAKEDEV-&makedev-version; /dev/MAKEDEV &amp;&amp;
 cd /dev &amp;&amp;
 chmod 754 MAKEDEV</userinput></screen></para>