Remove empty files accidentally added by a8b2e306

This patch simply removes 2 empty files that were accidentally
added a part of the scrub priority patch.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #6990