[media] saa7146: 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: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/common/saa7146/saa7146_core.c

@@ -524,8 +524,6 @@ static void saa7146_remove_one(struct pci_dev *pdev)
 	DEB_EE("dev:%p\n", dev);
 
 	dev->ext->detach(dev);
-	/* Zero the PCI drvdata after use. */
-	pci_set_drvdata(pdev, NULL);
 
 	/* shut down all video dma transfers */
 	saa7146_write(dev, MC1, 0x00ff0000);