Input: cyttsp5 - remove unused code

The removed lines are remnants of the vendor driver and are not used in
the upstream driver.
Signed-off-by: Maximilian Weigand <mweigand@mweigand.net>
Reviewed-by: Alistair Francis <alistair@alistair23.me>
Link: https://lore.kernel.org/r/20230501113010.891786-3-mweigand@mweigand.netSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/cyttsp5.c

@@ -600,12 +600,7 @@ static int cyttsp5_get_hid_descriptor(struct cyttsp5 *ts,
 				      struct cyttsp5_hid_desc *desc)
 {
 	struct device *dev = ts->dev;
-	__le16 hid_desc_register = cpu_to_le16(HID_DESC_REG);
 	int rc;
-	u8 cmd[2];
-
-	/* Set HID descriptor register */
-	memcpy(cmd, &hid_desc_register, sizeof(hid_desc_register));
 
 	rc = cyttsp5_write(ts, HID_DESC_REG, NULL, 0);
 	if (rc) {