HPCC-8459 Fix incorrect ESP log when file not deleted

When a logical file cannot be deleted and the queryDistribut
edFileSystem().remove() does not return error message, ESP log
shows "Deleted Logical File: ...". This fix checks the return
of the remove() and logs correct information.

Signed-off-by: Kevin Wang <kevin.wang@lexisnexis.com>
Merge pull request #3836 from wangkx/h8459

HPCC-8459 Fix incorrect ESP log when file not deleted

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>