Cosmetic: don't unconditionally probe i2c-piix4 since that is no longer

common to all our machines.

tmcd/linux/rc.healthd

 #!/bin/sh
 #
 # EMULAB-COPYRIGHT
-# Copyright (c) 2000-2002 University of Utah and the Flux Group.
+# Copyright (c) 2000-2002, 2004 University of Utah and the Flux Group.
 # All rights reserved.
 #
 . /etc/emulab/paths.sh
@@ -11,19 +11,16 @@ MODPROBE=/sbin/modprobe
 
 case "$1" in
 	start)
-		#
-		# We always load this kernel module
-		#
-		$MODPROBE i2c-piix4
-
 		#
 		# Now, we load the hardware-specific kernel module
 		#
 		case "$NODETYPE" in
 		    pc600)
+			$MODPROBE i2c-piix4
 			$MODPROBE w83781d
 			;;
 		    pc850)
+			$MODPROBE i2c-piix4
 		    	$MODPROBE adm9240
 			;;
 		    *)