removed functions from SettingsManager that shouldn't be there

src/controllers/highlights/HighlightController.cpp

@@ -32,7 +32,7 @@ HighlightModel *HighlightController::createModel(QObject *parent)
     return model;
 }
 
-void HighlightController::addHighlight(const chatterino::MessagePtr &msg)
+void HighlightController::addHighlight(const MessagePtr &msg)
 {
     //    static NotificationPopup popup;
 

src/controllers/highlights/HighlightController.hpp

@@ -20,12 +20,12 @@ public:
 
     HighlightModel *createModel(QObject *parent);
 
-    void addHighlight(const chatterino::MessagePtr &msg);
+    void addHighlight(const MessagePtr &msg);
 
 private:
     bool initialized = false;
 
-    chatterino::ChatterinoSetting<std::vector<HighlightPhrase>> highlightsSetting = {
+    ChatterinoSetting<std::vector<HighlightPhrase>> highlightsSetting = {
         "/highlighting/highlights"};
 };