UBIFS: remove unneeded check

Commit d70b67c8bc72ee23b55381bd6a884f4796692f77 fixed VFS and
it never calls FS lookup function in deleted directories now.
We may remove corresponding UBIFS check.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
1 file changed