ANDROID: usb: f_accessory: Remove stale comments

Neither acc_gadget_bind() nor acc_gadget_register_driver() exist, so
remove the stale comments that refer to them.

Bug: 173789633
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: If396ba3bcac3ca59c48e5a5faa0a8520534ed625
Signed-off-by: Giuliano Procida <gprocida@google.com>
diff --git a/drivers/usb/gadget/function/f_accessory.c b/drivers/usb/gadget/function/f_accessory.c
index de1c7ce..5509ea4 100644
--- a/drivers/usb/gadget/function/f_accessory.c
+++ b/drivers/usb/gadget/function/f_accessory.c
@@ -199,7 +199,6 @@ static struct usb_gadget_strings *acc_strings[] = {
 	NULL,
 };
 
-/* temporary variable used between acc_open() and acc_gadget_bind() */
 static struct acc_dev *_acc_dev;
 
 struct acc_instance {
@@ -1224,7 +1223,6 @@ static int acc_setup(void)
 	INIT_DELAYED_WORK(&dev->start_work, acc_start_work);
 	INIT_WORK(&dev->hid_work, acc_hid_work);
 
-	/* _acc_dev must be set before calling usb_gadget_register_driver */
 	_acc_dev = dev;
 
 	ret = misc_register(&acc_device);