staging: usbip: remove unnused, broken macro

Remove broken preprocessor macro "hardware". It is unused and it
references an element (pdev in vhci_hcd) that does not exist.
Signed-off-by: NStefan Reif <ke42caxa@cip.cs.fau.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/usbip/vhci.h

@@ -95,7 +95,6 @@ struct vhci_hcd {
 
 extern struct vhci_hcd *the_controller;
 extern const struct attribute_group dev_attr_group;
-#define hardware (&the_controller->pdev.dev)
 
 /* vhci_hcd.c */
 void rh_port_connect(int rhport, enum usb_device_speed speed);