Remove reference to CD_MOUNTPTS

Summary: Remove reference to CD_MOUNTPTS since it is being removed, see review D2888

Test Plan: jenkins

Reviewers: #doc_committers, wblock

Reviewed By: #doc_committers, wblock

Subscribers: wblock

Differential Revision: https://reviews.freebsd.org/D2979

en_US.ISO8859-1/books/handbook/ports/chapter.xml

@@ -1125,21 +1125,6 @@ Deinstalling ca_root_nss-3.15.1_1... done</screen>
       <para>Using the Ports Collection assumes a working Internet
 	connection.  It also requires superuser privilege.</para>
 
-      <para>Some third-party DVD products such as the &os; Toolkit
-	from <link
-	  xlink:href="http://www.freebsdmall.com/">freebsdmall.com</link>
-	contain distfiles which can be used to install ports without
-	an Internet connection.  Mount the DVD on
-	<filename>/cdrom</filename>.  If you use a different mount
-	point, set the <varname>CD_MOUNTPTS</varname> make variable.
-	The needed distfiles will be automatically used if they are
-	present on the disk.  However, the licenses of a few ports do
-	not allow their inclusion on the DVD.  This could be because a
-	registration form needs to be filled out before downloading or
-	redistribution is not allowed.  In order to install a port not
-	included on the DVD, a connection to the Internet will still
-	be required.</para>
-
       <para>To compile and install the port, change to the directory
 	of the port to be installed, then type <command>make
 	  install</command> at the prompt.  Messages will indicate