HPCC-12117 Clean up access to the default timer

Signed-off-by: Gavin Halliday <gavin.halliday@lexisnexis.com>
HPCC-12117 Remove unnecessary code to clear the default timer

Signed-off-by: Gavin Halliday <gavin.halliday@lexisnexis.com>
Merge pull request #6468 from ghalliday/issue12117

HPCC-12117 Clean up access to the default timer

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>