[media] dvb_usb_v2: remove usb_clear_halt()

Calling usb_clear_halt() during device init is not correct.
2 of 7 AF9015 devices I have timeouts next USB control message
after usb_clear_halt(). It was originally performed between
tuner_attach() and rc_query() and likely not causing problems
since rc_query() is repeated continously. None could see it when
first rc_query() failed...

Secondly it was not called for .generic_bulk_ctrl_endpoint_response.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/dvb-usb/dvb_usb_init.c

@@ -145,17 +145,6 @@ static int dvb_usb_adapter_init(struct dvb_usb_device *d)
 		d->state |= DVB_USB_STATE_DVB;
 	}
 
-	/*
-	 * when reloading the driver w/o replugging the device
-	 * sometimes a timeout occures, this helps
-	 */
-	if (d->props.generic_bulk_ctrl_endpoint != 0) {
-		usb_clear_halt(d->udev, usb_sndbulkpipe(d->udev,
-			d->props.generic_bulk_ctrl_endpoint));
-		usb_clear_halt(d->udev, usb_rcvbulkpipe(d->udev,
-			d->props.generic_bulk_ctrl_endpoint));
-	}
-
 	return 0;
 err:
 	pr_debug("%s: failed=%d\n", __func__, ret);
@@ -177,7 +166,6 @@ static int dvb_usb_adapter_exit(struct dvb_usb_device *d)
 	return 0;
 }
 
-
 /* general initialization functions */
 static int dvb_usb_exit(struct dvb_usb_device *d)
 {