[PATCH -next] staging: comedi: remove unused variable 'route_table_size'

[YueHaibing]

drivers/staging/comedi/drivers/ni_routes.c:52:21: warning:
 route_table_size defined but not used [-Wunused-const-variable=]

It is never used since introduction.

Signed-off-by: YueHaibing <yuehaibing at huawei.com>
---
 drivers/staging/comedi/drivers/ni_routes.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/staging/comedi/drivers/ni_routes.c b/drivers/staging/comedi/drivers/ni_routes.c
index eb61494..673d732 100644
--- a/drivers/staging/comedi/drivers/ni_routes.c
+++ b/drivers/staging/comedi/drivers/ni_routes.c
@@ -49,8 +49,6 @@
 /* Helper for accessing data. */
 #define RVi(table, src, dest)	((table)[(dest) * NI_NUM_NAMES + (src)])
 
-static const size_t route_table_size = NI_NUM_NAMES * NI_NUM_NAMES;
-
 /*
  * Find the proper route_values and ni_device_routes tables for this particular
  * device.
-- 
2.7.4