Input: xilinx_ps2 - remove redundant platform_set_drvdata()

Commit 0998d063 (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/serio/xilinx_ps2.c

@@ -349,8 +349,6 @@ static int xps2_of_remove(struct platform_device *of_dev)
 
 	kfree(drvdata);
 
-	platform_set_drvdata(of_dev, NULL);
-
 	return 0;
 }