serial: fsl_lpuart: remove build warning

commit 2a41bc2a ("tty: serial: fsl_lpuart: add polled console
functions") caused a build warning about an unused variable, so fix it.
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Cc: Nicolae Rosia <nicolae_rosia@mentor.com>
Cc: Stefan Golinschi <stefan.golinschi@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/fsl_lpuart.c

@@ -473,8 +473,6 @@ static int lpuart_poll_init(struct uart_port *port)
 
 static void lpuart_poll_put_char(struct uart_port *port, unsigned char c)
 {
-	unsigned int status;
-
 	/* drain */
 	while (!(readb(port->membase + UARTSR1) & UARTSR1_TDRE))
 		barrier();