HPCC-10768 - rollback consistent Thor file locking for 4.2.2

Signed-off-by: Jake Smith <jake.smith@lexisnexis.com>
Merge pull request #5328 from jakesmith/hpcc-10768

HPCC-10768 - rollback consistent Thor file locking for 4.2.2

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>