mtd: nand: nuc900_nand: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d063
(device-core: Ensure drvdata = NULL when no driver is bound).
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: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

drivers/mtd/nand/nuc900_nand.c

@@ -324,8 +324,6 @@ static int nuc900_nand_remove(struct platform_device *pdev)
 
 	kfree(nuc900_nand);
 
-	platform_set_drvdata(pdev, NULL);
-
 	return 0;
 }