mfd: tc6387xb: 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>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/mfd/tc6387xb.c

@@ -217,7 +217,6 @@ static int tc6387xb_remove(struct platform_device *dev)
 	release_resource(&tc6387xb->rscr);
 	clk_disable(tc6387xb->clk32k);
 	clk_put(tc6387xb->clk32k);
-	platform_set_drvdata(dev, NULL);
 	kfree(tc6387xb);
 
 	return 0;