btrfs: add and use helper for unlinking inode during log replay

btrfs: add and use helper for unlinking inode during log replay

[ Upstream commit 313ab75399d0c7d0ebc718c545572c1b4d8d22ef ]

During log replay there is this pattern of running delayed items after
every inode unlink. To avoid repeating this several times, move the
logic into an helper function and use it instead of calling
btrfs_unlink_inode() followed by btrfs_run_delayed_items().

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>