cgroup, netclassid: remove double cond_resched

Commit 018d26fc ("cgroup, netclassid: periodically release file_lock
on classid") added a second cond_resched to write_classid indirectly by
update_classid_task. Remove the one in write_classid.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Dmitry Yakunin <zeil@yandex-team.ru>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/core/netclassid_cgroup.c

@@ -127,10 +127,8 @@ static int write_classid(struct cgroup_subsys_state *css, struct cftype *cft,
 	cs->classid = (u32)value;
 
 	css_task_iter_start(css, 0, &it);
-	while ((p = css_task_iter_next(&it))) {
+	while ((p = css_task_iter_next(&it)))
 		update_classid_task(p, cs->classid);
-		cond_resched();
-	}
 	css_task_iter_end(&it);
 
 	return 0;