don't send Turnitin::Errors::SubmissionNotScoredError to sentry
don't send Turnitin::Errors::SubmissionNotScoredError to sentry

this is just used to fail the delayed job, so it retries. if it fails
it's max retries, the error details are logged on the submission

Change-Id: If1f7da5dd5331ad153d78c323526eac22afd01c5
Reviewed-on: https://gerrit.instructure.com/143174
Tested-by: Jenkins
Reviewed-by: Nathan Mills <10b0771d20c18ad0d98c1d000665e443052b40b0@instructure.com>
Product-Review: Simon Williams <088e16a1019277b15d58faf0541e11910eb756f6@instructure.com>
QA-Review: Simon Williams <088e16a1019277b15d58faf0541e11910eb756f6@instructure.com>

sfu/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,djbender/canvas-lms