USB: hcd.h : Removed an unnecessary function prototype usb_find_interface_driver()

This function is used to call in early version of linux kernel in order
to find out the interface used by a usb device. But now it's use is
completely abolished. So,it would be relevant to remove this obselete
function from kernel mainline.
Signed-off-by: NAbhishek Bist <ishubist@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

include/linux/usb/hcd.h

@@ -622,8 +622,6 @@ extern struct list_head usb_bus_list;
 extern struct mutex usb_bus_list_lock;
 extern wait_queue_head_t usb_kill_urb_queue;
 
-extern int usb_find_interface_driver(struct usb_device *dev,
-	struct usb_interface *interface);
 
 #define usb_endpoint_out(ep_dir)	(!((ep_dir) & USB_DIR_IN))