mtd: intel_vr_nor: 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: Brian Norris <computersforpeace@gmail.com>

drivers/mtd/maps/intel_vr_nor.c

@@ -180,7 +180,6 @@ static void vr_nor_pci_remove(struct pci_dev *dev)
 {
 	struct vr_nor_mtd *p = pci_get_drvdata(dev);
 
-	pci_set_drvdata(dev, NULL);
 	vr_nor_destroy_partitions(p);
 	vr_nor_destroy_mtd_setup(p);
 	vr_nor_destroy_maps(p);