printk: Remove the now superfluous sentinel elements from ctl_table array

This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
https://lore.kernel.org/all/ZO5Yx5JFogGi%2FcBo@bombadil.infradead.org/)

rm sentinel element from printk_sysctls

Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Joel Granados <j.granados@samsung.com>

Author: Joelgranados

kernel/printk/sysctl.c

@@ -76,7 +76,6 @@ static struct ctl_table printk_sysctls[] = {
 		.extra1		= SYSCTL_ZERO,
 		.extra2		= SYSCTL_TWO,
 	},
-	{}
 };
 
 void __init printk_sysctl_init(void)