sched: Remove obsolete comment in sched_init()

Remove the comment about calling alloc_bootmem() as it is not
called here since commit 36b7b6d465.

Signed-off-by: Jayson R. King <dev@jaysonking.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Jiri Kosina <trivial@kernel.org>
LKML-Reference: <4AC9C8A6.6010209@jaysonking.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

kernel/sched.c

@@ -9322,10 +9322,6 @@ void __init sched_init(void)
 #ifdef CONFIG_CPUMASK_OFFSTACK
 	alloc_size += num_possible_cpus() * cpumask_size();
 #endif
-	/*
-	 * As sched_init() is called before page_alloc is setup,
-	 * we use alloc_bootmem().
-	 */
 	if (alloc_size) {
 		ptr = (unsigned long)kzalloc(alloc_size, GFP_NOWAIT);