- Remove the chapter on DMA from FreeBSD Developers' Handbook since it

is no longer valid, however there could be added a new chapter on
  busdma [1] instead of this one

[1] http://www.freebsd.org/projects/busdma/

PR:		docs/126146
Discussed with:	jhb
Submitted by:	gavin
Approved by:	gabor (mentor)

en_US.ISO8859-1/books/developers-handbook/Makefile

@@ -25,7 +25,6 @@ IMAGES_EN= sockets/layers.eps sockets/sain.eps sockets/sainfill.eps sockets/sain
 
 # SGML content
 SRCS=  book.sgml
-SRCS+= dma/chapter.sgml
 SRCS+= introduction/chapter.sgml
 SRCS+= ipv6/chapter.sgml
 SRCS+= kernelbuild/chapter.sgml

en_US.ISO8859-1/books/developers-handbook/book.sgml

@@ -85,7 +85,6 @@
   <part id="kernel">
     <title>Kernel</title>
 
-    &chap.dma;
     &chap.kernelbuild;
     &chap.kerneldebug;
 

en_US.ISO8859-1/books/developers-handbook/chapters.ent

@@ -22,7 +22,6 @@
 <!ENTITY chap.ipv6			SYSTEM "ipv6/chapter.sgml">
 
 <!-- Part three - Kernel -->
-<!ENTITY chap.dma			SYSTEM "dma/chapter.sgml">
 <!ENTITY chap.kernelbuild		SYSTEM "kernelbuild/chapter.sgml">
 <!ENTITY chap.kerneldebug		SYSTEM "kerneldebug/chapter.sgml">