isdn: elsa_ser: Fix set-but-unused variables.

The variable 'bits' is set but unused in
change_speed().  Just kill it off.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/isdn/hisax/elsa_ser.c b/drivers/isdn/hisax/elsa_ser.c
index cbda379..3fa9f61 100644
--- a/drivers/isdn/hisax/elsa_ser.c
+++ b/drivers/isdn/hisax/elsa_ser.c
@@ -109,11 +109,10 @@
 {
 	int	quot = 0, baud_base;
 	unsigned cval, fcr = 0;
-	int	bits;
 
 
 	/* byte size and parity */
-	cval = 0x03; bits = 10;
+	cval = 0x03;
 	/* Determine divisor based on baud rate */
 	baud_base = BASE_BAUD;
 	quot = baud_base / baud;