Use no payload type

Author: RichDom2185

src/features/leaderboard/LeaderboardActions.ts

@@ -3,15 +3,15 @@ import { createActions } from 'src/commons/redux/utils';
 import { ContestLeaderboardRow, LeaderboardRow } from './LeaderboardTypes';
 
 const LeaderboardActions = createActions('leaderboard', {
-  getAllUsersXp: () => ({}),
+  getAllUsersXp: 0,
   saveAllUsersXp: (userXp: LeaderboardRow[]) => userXp,
   getAllContestScores: (assessmentId: number) => assessmentId,
   saveAllContestScores: (contestScore: ContestLeaderboardRow[]) => contestScore,
   getAllContestPopularVotes: (assessmentId: number) => assessmentId,
   saveAllContestPopularVotes: (contestPopularVote: ContestLeaderboardRow[]) => contestPopularVote,
-  getCode: () => ({}),
+  getCode: 0,
   saveCode: (code: string) => code,
-  clearCode: () => ({})
+  clearCode: 0
 });
 
 export default LeaderboardActions;