GitLab

current_pool was an old switchman special that isn't needed on rails 6.1+

fixes CANVAS-HWDH

Change-Id: I98c60154b5a572669adeaada5e8cfe8dc1347033
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/287731

Reviewed-by: Aaron Ogata <aogata@instructure.com>
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>
QA-Review: Jacob Burroughs <jburroughs@instructure.com>
Product-Review: Jacob Burroughs <jburroughs@instructure.com>