cgroup: remove cgroup_taskset_cur_css() and cgroup_taskset_size()

The two functions don't have any users left.  Remove them along with
cgroup_taskset->cur_cgrp.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
2 files changed