This definition isn't used anywhere anymore, let's delete it.

Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Lech Perczak <lech.perczak@camlingroup.com>
---
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Cc: Andy Shevchenko <andy@kernel.org>
---
 drivers/tty/serial/sc16is7xx.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index bf0065d1c8e9..8a2020f9930e 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -207,7 +207,6 @@
 #define SC16IS7XX_MSR_CD_BIT		(1 << 7) /* CD (IO6)
 						  * - only on 75x/76x
 						  */
-#define SC16IS7XX_MSR_DELTA_MASK	0x0F     /* Any of the delta bits! */
 
 /*
  * TCR register bits
-- 
2.34.1