serial: xuartps: remove unnecessary register write

This writel writes the exact same value as the previous writel and is
thus unnecessary. It accidentally became unnecessary in e3538c37
("tty: xuartps: Beautify read-modify writes"), but the new behaviour is
now expected.

Link: https://www.spinics.net/lists/linux-serial/msg23168.htmlSigned-off-by: NHelmut Grohne <h.grohne@intenta.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/xilinx_uartps.c

@@ -1203,8 +1203,6 @@ static void cdns_uart_console_write(struct console *co, const char *s,
 			CDNS_UART_SR_TXEMPTY)
 		cpu_relax();
 
-	writel(ctrl, port->membase + CDNS_UART_CR);
-
 	/* restore interrupt state */
 	writel(imr, port->membase + CDNS_UART_IER);