kernel/sysctl.c: remove unused variable ten_thousand

The const variable ten_thousand is not used, it is redundant and can be
removed.

Cleans up clang warning:

  kernel/sysctl.c:99:18: warning: unused variable 'ten_thousand' [-Wunused-const-variable]
  static const int ten_thousand = 10000;

Link: https://lkml.kernel.org/r/[email protected]
Fixes: c26da54 ("printk: move printk sysctl to printk/sysctl.c")
Signed-off-by: Colin Ian King <[email protected]>
Acked-by: Luis Chamberlain <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

kernel/sysctl.c

@@ -96,9 +96,6 @@
 
 /* Constants used for minimum and  maximum */
 
-#ifdef CONFIG_PRINTK
-static const int ten_thousand = 10000;
-#endif
 #ifdef CONFIG_PERF_EVENTS
 static const int six_hundred_forty_kb = 640 * 1024;
 #endif