Updated the grading system to work based on entities

src/components/Medium/StatGridItem.tsx

@@ -77,7 +77,6 @@ interface StatsGridItemProps {
 	assignments: Assignment[];
 	users: User[];
 	training?: boolean;
-	gradingSystem?: Step[];
 	selectedTrainingExams?: string[];
 	maxTrainingExams?: number;
 	setSelectedTrainingExams?: React.Dispatch<React.SetStateAction<string[]>>;
@@ -98,7 +97,6 @@ const StatsGridItem: React.FC<StatsGridItemProps> = ({
 	users,
 	training,
 	selectedTrainingExams,
-	gradingSystem,
 	setSelectedTrainingExams,
 	setExams,
 	setShowSolutions,