The double `should' is duplicated in line 15, remove one.

Signed-off-by: Jason Wang <wangborong@cdjrlc.com>
---
 drivers/tty/amiserial.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index 5458e2b1c125..81e7f64c1739 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -12,7 +12,7 @@
  * (non hardware specific) changes to serial.c.
  *
  * The port is registered with the tty driver as minor device 64, and
- * therefore other ports should should only use 65 upwards.
+ * therefore other ports should only use 65 upwards.
  *
  * Richard Lucock 28/12/99
  *
-- 
2.35.1