Clean up emotemanager emoji code

src/emotemanager.hpp

@@ -54,7 +54,6 @@ public:
     EmoteMap &getFFZEmotes();
     EmoteMap &getChatterinoEmotes();
     EmoteMap &getBTTVChannelEmoteFromCaches();
-    EmoteMap &getEmojis();
     ConcurrentMap<int, EmoteData> &getFFZChannelEmoteFromCaches();
     ConcurrentMap<long, EmoteData> &getTwitchEmoteFromCache();
 
@@ -88,7 +87,6 @@ private:
     QMap<QChar, QVector<EmojiData>> emojiFirstByte;
 
     //            url      Emoji-one image
-    EmoteMap emojiCache;
     EmoteMap emojis;
 
     void loadEmojis();