i440fx: remove piix3 field

Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

hw/piix_pci.c

@@ -81,7 +81,6 @@ struct PCII440FXState {
     PAMMemoryRegion pam_regions[13];
     MemoryRegion smram_region;
     uint8_t smm_enabled;
-    PIIX3State *piix3;
 };
 
 
@@ -320,8 +319,6 @@ static PCIBus *i440fx_common_init(const char *device_name,
     qdev_property_add_child(dev, "piix3", &piix3->dev.qdev, NULL);
     piix3->pic = pic;
 
-    (*pi440fx_state)->piix3 = piix3;
-
     *piix3_devfn = piix3->dev.devfn;
 
     ram_size = ram_size / 8 / 1024 / 1024;