virDomainDeviceIsUSB: Drop check for USB controller

Delete the USB controller check from the USB Device checklist in
virDomainDeviceIsUSB as USB controller is a PCI device rather than
a USB one.
Signed-off-by: NLiu Ji <jeremy.liu@huawei.com>

src/conf/domain_conf.c

@@ -16996,8 +16996,6 @@ virDomainDeviceIsUSB(virDomainDeviceDefPtr dev)
     int t = dev->type;
     if ((t == VIR_DOMAIN_DEVICE_DISK &&
          dev->data.disk->bus == VIR_DOMAIN_DISK_BUS_USB) ||
-        (t == VIR_DOMAIN_DEVICE_CONTROLLER &&
-         dev->data.controller->type == VIR_DOMAIN_CONTROLLER_TYPE_USB) ||
         (t == VIR_DOMAIN_DEVICE_INPUT &&
          dev->data.input->type == VIR_DOMAIN_INPUT_BUS_USB) ||
         (t == VIR_DOMAIN_DEVICE_HOSTDEV &&