Input: w90p910_ts - remove redundant platform_set_drvdata()

Commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) removes the need to set driver data field to
NULL.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/w90p910_ts.c

@@ -318,8 +318,6 @@ static int w90x900ts_remove(struct platform_device *pdev)
 	input_unregister_device(w90p910_ts->input);
 	kfree(w90p910_ts);
 
-	platform_set_drvdata(pdev, NULL);
-
 	return 0;
 }