USB: remove BKL comments

The BKL is a gonner.
Signed-off-by: Davidlohr Bueso <dave@gnu.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/core/hub.c

@@ -1360,7 +1360,6 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id)
 	return -ENODEV;
 }
 
-/* No BKL needed */
 static int
 hub_ioctl(struct usb_interface *intf, unsigned int code, void *user_data)
 {

drivers/usb/misc/usbtest.c

@@ -1765,7 +1765,6 @@ static int test_unaligned_bulk(
  * off just killing the userspace task and waiting for it to exit.
  */
 
-/* No BKL needed */
 static int
 usbtest_ioctl(struct usb_interface *intf, unsigned int code, void *buf)
 {

drivers/usb/serial/usb-serial.c

@@ -1340,7 +1340,6 @@ static void fixup_generic(struct usb_serial_driver *device)
 
 int usb_serial_register(struct usb_serial_driver *driver)
 {
-	/* must be called with BKL held */
 	int retval;
 
 	if (usb_disabled())
@@ -1378,7 +1377,6 @@ EXPORT_SYMBOL_GPL(usb_serial_register);
 
 void usb_serial_deregister(struct usb_serial_driver *device)
 {
-	/* must be called with BKL held */
 	printk(KERN_INFO "USB Serial deregistering driver %s\n",
 	       device->description);
 	mutex_lock(&table_lock);