cgroup/cpuset: remove unreachable code

The function sched_partition_show cannot execute seq_puts, delete the
invalid code.

kernel/cgroup/cpuset.c:2849 sched_partition_show() warn: ignoring unreachable code.

Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=2087Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

kernel/cgroup/cpuset.c

@@ -2846,8 +2846,6 @@ static int sched_partition_show(struct seq_file *seq, void *v)
 		else
 			seq_printf(seq, "%s invalid\n", type);
 		break;
-		seq_puts(seq, "isolated invalid\n");
-		break;
 	}
 	return 0;
 }