Remove any reference to now non existing USE_IMAKE

Approved by:	gavin

en_US.ISO8859-1/books/porters-handbook/book.xml

@@ -136,7 +136,6 @@ COMMENT=	Cat chasing a mouse all over the screen
 
 MAN1=		oneko.1
 MANCOMPRESSED=	yes
-USE_IMAKE=	yes
 
 .include &lt;bsd.port.mk&gt;</programlisting>
 
@@ -547,11 +546,6 @@ PLIST_DIRS=	lib/X11/oneko</programlisting>
 		is run.</para>
 	    </listitem>
 
-	    <listitem>
-	      <para>If <makevar>USE_IMAKE</makevar> is set,
-		<makevar>XMKMF</makevar> (default: <command>xmkmf
-		  -a</command>) is run.</para>
-	    </listitem>
 	  </orderedlist>
 	</step>
 
@@ -4160,13 +4154,6 @@ MASTERDIR=	${.CURDIR}/../xdvi300
 	<filename>bsd.port.mk</filename> does not have to do anything
 	special.</para>
 
-      <para><makevar>MANCOMPRESSED</makevar> is automatically set to
-	<literal>yes</literal> if <makevar>USE_IMAKE</makevar> is set
-	and <makevar>NO_INSTALL_MANPAGES</makevar> is not set, and to
-	<literal>no</literal> otherwise.  You do not have to
-	explicitly define it unless the default is not suitable for
-	your port.</para>
-
       <para>If your port anchors its man tree somewhere other than
 	<makevar>PREFIX</makevar>, you can use the
 	<makevar>MANPREFIX</makevar> to set it.  Also, if only
@@ -16168,8 +16155,7 @@ Reference: &lt;http://www.freebsd.org/ports/portaudit/74a9541d-5d6c-11d8-80e3-00
       </informaltable>
 
       <note>
-	<para>If you have to define the variables
-	  <makevar>USE_IMAKE</makevar> or
+	<para>If you have to define the variable
 	  <makevar>MASTERDIR</makevar>, do so before including
 	  <filename>bsd.port.pre.mk</filename>.</para>
       </note>