PCI: Kconfig help: don't refer to the PCI-HOWTO

A HOWTO that hasn't been updated for half a dozen years no longer
"contains valuable information about which PCI hardware does work under
Linux and which doesn't".

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

arch/m32r/Kconfig

@@ -359,11 +359,6 @@ config PCI
 	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 	  VESA. If you have PCI, say Y, otherwise N.
 
-	  The PCI-HOWTO, available from
-	  <http://www.linuxdoc.org/docs.html#howto>, contains valuable
-	  information about which PCI hardware does work under Linux and which
-	  doesn't.
-
 choice
 	prompt "PCI access mode"
 	depends on PCI