When adding a service as staff on a client profile page, "In-Review" is an option for status, but it shouldn't be. Setting a service to "In-Review" here will create a problem, as the system does not display or allow changes to services that are in-review, as it is a special status reserved for the order system.
Before removing it, ensure that it won't cause any other problems. It's a legitimate status, but this status should not be able to be set in the UI. As far as I know, the only place this can be done is when adding a service as staff.