HPCC-8559 Remove legacy thor support

Clean up some run time interfaces that are no longer required.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
Merge pull request #4073 from richardkchapman/interface-cleanup

HPCC-8559 Remove legacy thor support

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>