Input: wm831x-ts - remove unneeded clearing of driver data

This is unneeded, only a bound driver can use driver data and a driver
relying on the state prior to probe() is buggy.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/wm831x-ts.c

@@ -390,7 +390,6 @@ static __devexit int wm831x_ts_remove(struct platform_device *pdev)
 	input_unregister_device(wm831x_ts->input_dev);
 	kfree(wm831x_ts);
 
-	platform_set_drvdata(pdev, NULL);
 	return 0;
 }