tools: xencommons: revert accidental hunk in 24905:2b5cf6bde62d

24905:2b5cf6bde62d accidentally contained a change to
tools/hotplug/Linux/init.d/xencommons.  That change is probably OK but
should not be in 24905 so remove it.

Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>

tools/hotplug/Linux/init.d/xencommons

@@ -58,7 +58,6 @@ do_start () {
 	modprobe xen-gntdev 2>/dev/null
 	modprobe evtchn 2>/dev/null
 	modprobe gntdev 2>/dev/null
-	modprobe processor-passthru 2>/dev/null
 
 	if ! `xenstore-read -s / >/dev/null 2>&1`
 	then