HPCC-11324 Fix regression deleting logical file

effected fileservices and dfuhelper (as used by esp)

Signed-off-by: Jake Smith <jake.smith@lexisnexis.com>
Merge pull request #5841 from jakesmith/hpcc-11324b

HPCC-11324 Fix regression deleting logical file

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>