Input: ili210x - do not set parent device explicitly

We are using devm_input_allocate_device() that set's up the parent for
us, no need to do it ourselves.

Tested-by: Adam Ford <aford173@gmail.com> #imx6q-logicpd
Tested-by: Sven Van Asbroeck <TheSven73@gmail.com> # ILI2118A variant
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/ili210x.c

@@ -365,7 +365,6 @@ static int ili210x_i2c_probe(struct i2c_client *client,
 	/* Setup input device */
 	input->name = "ILI210x Touchscreen";
 	input->id.bustype = BUS_I2C;
-	input->dev.parent = dev;
 
 	/* Multi touch */
 	input_set_abs_params(input, ABS_MT_POSITION_X, 0, 0xffff, 0, 0);