iio: common: scmi_iio: Remove unnecessary u64 type cast

The variable uHz already has the type u64 and casting it to u64 is
unnecessary. Remove the redundant type cast.
Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com>
Link: https://patch.msgid.link/20240711134502.168484-1-thorsten.blum@toblux.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/common/scmi_sensors/scmi_iio.c

@@ -158,7 +158,7 @@ static int scmi_iio_set_odr_val(struct iio_dev *iio_dev, int val, int val2)
 	 * To calculate the multiplier,we convert the sf into char string  and
 	 * count the number of characters
 	 */
-	sf = (u64)uHz * 0xFFFF;
+	sf = uHz * 0xFFFF;
 	do_div(sf,  MICROHZ_PER_HZ);
 	mult = scnprintf(buf, sizeof(buf), "%llu", sf) - 1;