target/ppc/kvm: Drop useless include directive

It has been there since the enablement of PR KVM for PAPR, ie, commit
f61b4be in 2011. Not sure why at that time, but it is definitely
not needed with the current code.

Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

target/ppc/kvm.c

@@ -36,7 +36,6 @@
 
 #include "hw/sysbus.h"
 #include "hw/ppc/spapr.h"
-#include "hw/ppc/spapr_vio.h"
 #include "hw/ppc/spapr_cpu_core.h"
 #include "hw/ppc/ppc.h"
 #include "sysemu/watchdog.h"