serial: max310x: Remove serial_rs485 sanitization

Serial core handles serial_rs485 sanitization.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220606100433.13793-33-ilpo.jarvinen@linux.intel.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/max310x.c

@@ -1045,8 +1045,6 @@ static int max310x_rs485_config(struct uart_port *port,
 	    (rs485->delay_rts_after_send > 0x0f))
 		return -ERANGE;
 
-	rs485->flags &= SER_RS485_RTS_ON_SEND | SER_RS485_RX_DURING_TX |
-			SER_RS485_ENABLED;
 	port->rs485 = *rs485;
 
 	schedule_work(&one->rs_work);