timens: Delete no-op time_ns_init()

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Andrei Vagin <avagin@gmail.com>
Link: https://lore.kernel.org/r/20201228215402.GA572900@localhost.localdomain

kernel/time/namespace.c

@@ -465,9 +465,3 @@ struct time_namespace init_time_ns = {
 	.ns.ops		= &timens_operations,
 	.frozen_offsets	= true,
 };
-
-static int __init time_ns_init(void)
-{
-	return 0;
-}
-subsys_initcall(time_ns_init);