chore: remove Singleton & replace getIApp with getApp (#5514)

src/singletons/Emotes.hpp

@@ -1,15 +1,11 @@
 #pragma once
 
-#include "common/Singleton.hpp"
 #include "providers/emoji/Emojis.hpp"
 #include "providers/twitch/TwitchEmotes.hpp"
 #include "singletons/helper/GifTimer.hpp"
 
 namespace chatterino {
 
-class Settings;
-class Paths;
-
 class IEmotes
 {
 public:
@@ -20,15 +16,11 @@ public:
     virtual GIFTimer &getGIFTimer() = 0;
 };
 
-class Emotes final : public IEmotes, public Singleton
+class Emotes final : public IEmotes
 {
 public:
     Emotes();
 
-    void initialize(Settings &settings, const Paths &paths) override;
-
-    bool isIgnoredEmote(const QString &emote);
-
     ITwitchEmotes *getTwitchEmotes() final
     {
         return &this->twitch;