[PATCH -next] serial: imx: remove set but not used variable 'rtsirq'

[YueHaibing]

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/tty/serial/imx.c: In function 'imx_uart_probe':
drivers/tty/serial/imx.c:2198:20: warning:
 variable 'rtsirq' set but not used [-Wunused-but-set-variable]

Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
 drivers/tty/serial/imx.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 4341589..1df7d23 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -2195,7 +2195,7 @@ static int imx_uart_probe(struct platform_device *pdev)
 	int ret = 0;
 	u32 ucr1;
 	struct resource *res;
-	int txirq, rxirq, rtsirq;
+	int txirq, rxirq;
 
 	sport = devm_kzalloc(&pdev->dev, sizeof(*sport), GFP_KERNEL);
 	if (!sport)
@@ -2220,7 +2220,6 @@ static int imx_uart_probe(struct platform_device *pdev)
 
 	rxirq = platform_get_irq(pdev, 0);
 	txirq = platform_get_irq(pdev, 1);
-	rtsirq = platform_get_irq(pdev, 2);
 
 	sport->port.dev = &pdev->dev;
 	sport->port.mapbase = res->start;