remove sparc from bsdinstall section

Patch by:	carlavilla@
Approved by:	bcr@(mentor)
Differential Revision:	https://reviews.freebsd.org/D24123

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

@@ -710,41 +710,6 @@ commit your changes?</programlisting>
       <screen><userinput>boot cd:,\ppc\loader cd:0</userinput></screen>
     </sect2>
 
-    <sect2>
-      <title>Booting on &sparc64;</title>
-
-      <para>Most &sparc64; systems are set up to boot automatically
-	from disk.  To install &os; from a <acronym>CD</acronym>
-	requires a break into the <acronym>PROM</acronym>.</para>
-
-      <para>To do this, reboot the system and wait until the boot
-	message appears.  The message depends on the model, but should
-	look something like this:</para>
-
-      <screen>Sun Blade 100 (UltraSPARC-IIe), Keyboard Present
-Copyright 1998-2001 Sun Microsystems, Inc.  All rights reserved.
-OpenBoot 4.2, 128 MB memory installed, Serial #51090132.
-Ethernet address 0:3:ba:b:92:d4, Host ID: 830b92d4.</screen>
-
-      <para>If the system proceeds to boot from disk at this point,
-	press <keycombo
-	  action="simul"><keycap>L1</keycap><keycap>A</keycap></keycombo>
-	or <keycombo
-	  action="simul"><keycap>Stop</keycap><keycap>A</keycap></keycombo>
-	on the keyboard, or send a <command>BREAK</command> over the
-	serial console.  When using <application>tip</application> or
-	<application>cu</application>, <command>~#</command> will
-	issue a BREAK. The <acronym>PROM</acronym> prompt will be
-	<prompt>ok</prompt> on systems with one
-	<acronym>CPU</acronym> and <prompt>ok {0} </prompt> on
-	<acronym>SMP</acronym> systems, where the digit indicates the
-	number of the active <acronym>CPU</acronym>.</para>
-
-      <para>At this point, place the <acronym>CD</acronym> into the
-	drive and type <command>boot cdrom</command> from the
-	<acronym>PROM</acronym> prompt.</para>
-    </sect2>
-
     <sect2 xml:id="bsdinstall-view-probe">
       <title>&os; Boot Menu</title>