Remove unused leaderboard state fields

Author: sayomaki

src/commons/application/ApplicationTypes.ts

@@ -348,7 +348,6 @@ export const defaultAchievement: AchievementState = {
 };
 
 export const defaultLeaderboard: LeaderboardState = {
-  userXp: [],
   paginatedUserXp: { rows: [], userCount: 0 },
   contestScore: [],
   contestPopularVote: [],

src/features/leaderboard/LeaderboardTypes.ts

@@ -19,7 +19,6 @@ export type ContestLeaderboardRow = {
 };
 
 export type LeaderboardState = {
-  userXp: LeaderboardRow[];
   paginatedUserXp: { rows: LeaderboardRow[]; userCount: number };
   contestScore: ContestLeaderboardRow[];
   contestPopularVote: ContestLeaderboardRow[];