PCI: hv: Remove the unused 'wrk' in struct hv_pcibus_device

Remove the unused 'wrk' member in struct hv_pcibus_device.
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: KY Srinivasan <kys@microsoft.com>
CC: Jake Oshins <jakeo@microsoft.com>
CC: Haiyang Zhang <haiyangz@microsoft.com>
CC: Vitaly Kuznetsov <vkuznets@redhat.com>

drivers/pci/host/pci-hyperv.c

@@ -374,7 +374,6 @@ struct hv_pcibus_device {
 
 	struct list_head children;
 	struct list_head dr_list;
-	struct work_struct wrk;
 
 	struct msi_domain_info msi_info;
 	struct msi_controller msi_chip;