Remove IORCM FF from Feature Options
Remove IORCM FF from Feature Options

closes OUT-5004
flag=individual_outcome_rating_and_calculation

Test plan:
- Go to Account > Feature Options
- Verify that Invididual Outcome Rating and Calculation
Method Options feature flag is not listed there

Change-Id: I2245f1fdcf9492a4b74c3fe2f5f9661893825d1c
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/288275
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>
Reviewed-by: Kyle Rosenbaum <08c6582752644f4eca90309d6d9805aeb3128ceb@instructure.com>
Reviewed-by: Brian Watson <4411c2aac809443ec63e2dd517de0f2dbc7408c6@instructure.com>
Reviewed-by: Chrystal Langston <d2663071bf6fe682e3f489a1b66462ff19cc17ab@instructure.com>
QA-Review: Chrystal Langston <d2663071bf6fe682e3f489a1b66462ff19cc17ab@instructure.com>
Product-Review: Kyle Rosenbaum <08c6582752644f4eca90309d6d9805aeb3128ceb@instructure.com>

instructure/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,sfu/canvas-lms