TD-4792 Write unit tests for filter added on optional competencies in the supervisor view

Author: sherif-olaboye

DigitalLearningSolutions.Web.Tests/Controllers/SupervisorController/SupervisorControllerTests.cs

@@ -259,7 +259,7 @@ public void ReviewDelegateSelfAssessment_Should_Return_View_With_Optional_Filter
             // Then
             result.Should().BeViewResult().ModelAs<ReviewSelfAssessmentViewModel>();
 
-            var competencyGroups = result.Should().BeViewResult()
+            result.Should().BeViewResult()
             .WithViewName("ReviewSelfAssessment")
             .ModelAs<ReviewSelfAssessmentViewModel>()
             .CompetencyGroups?.Should().NotBeNull();