sched/headers: Remove whitespace noise from kernel/sched/sched.h

A single case of space-Tab noise snuck in recently.

Fixes: 3656978 ("sched: Change nr_uninterruptible type to unsigned long")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://patch.msgid.link/176478595428.498.13816176784792752599.tip-bot2@tip-bot2

Author: ingomolnar

kernel/sched/sched.h

@@ -1165,7 +1165,7 @@ struct rq {
 	 * one CPU and if it got migrated afterwards it may decrease
 	 * it on another CPU. Always updated under the runqueue lock:
 	 */
-	unsigned long 		nr_uninterruptible;
+	unsigned long		nr_uninterruptible;
 
 #ifdef CONFIG_SCHED_PROXY_EXEC
 	struct task_struct __rcu	*donor;  /* Scheduling context */