parport_pc: remove unnecessary pci_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/parport/parport_pc.c b/drivers/parport/parport_pc.c
index 4b03dc5..a62d1315 100644
--- a/drivers/parport/parport_pc.c
+++ b/drivers/parport/parport_pc.c
@@ -2862,8 +2862,6 @@
 	struct pci_parport_data *data = pci_get_drvdata(dev);
 	int i;
 
-	pci_set_drvdata(dev, NULL);
-
 	if (data) {
 		for (i = data->num - 1; i >= 0; i--)
 			parport_pc_unregister_port(data->ports[i]);