Bluetooth: Remove unused SCO_DEFAULT_FLUSH_TO constant

The SCO_DEFAULT_FLUSH_TO constant has been defined, but it is not
used anywhere and so just remove it.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
diff --git a/include/net/bluetooth/sco.h b/include/net/bluetooth/sco.h
index 42a0d08..ab8b1ed 100644
--- a/include/net/bluetooth/sco.h
+++ b/include/net/bluetooth/sco.h
@@ -27,7 +27,6 @@
 
 /* SCO defaults */
 #define SCO_DEFAULT_MTU		500
-#define SCO_DEFAULT_FLUSH_TO	0xFFFF
 
 #define SCO_CONN_TIMEOUT	(HZ * 40)
 #define SCO_DISCONN_TIMEOUT	(HZ * 2)