ocfs2: remove some useless functions

ocfs2: remove some useless functions

Patch series "ocfs2: A few clean_ups", v2.

__ocfs2_node_map_set_bit() and __ocfs2_node_map_clear_bit() are just
wrapper around set_bit() and clear_bit().

The leading __ also makes think that these functions are non-atomic just
like __set_bit() and __clear_bit().

So, just remove these wrappers and call set_bit() and clear_bit()
directly.

Link: https://lkml.kernel.org/r/cover.1658436259.git.christophe.jaillet@wanadoo.fr
Link: https://lkml.kernel.org/r/bd1429c84ec7d174c96dbb67a2b42b1b456d9394.1658436259.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>