Not necessary to define as slots

agents/mailfilteragent/mailfilteragent.h

@@ -51,7 +51,7 @@ public:
 protected:
     void itemAdded(const Akonadi::Item &item, const Akonadi::Collection &collection) override;
 
-private Q_SLOTS:
+private:
     void initializeCollections();
     void initialCollectionFetchingDone(KJob *);
     void mailCollectionAdded(const Akonadi::Collection &collection, const Akonadi::Collection &parent);

src/configuredialog/configurecomposerpage.h

@@ -152,14 +152,12 @@ public:
 
     void save() override;
 
-private Q_SLOTS:
+private:
     void slotMimeHeaderSelectionChanged();
     void slotMimeHeaderNameChanged(const QString &);
     void slotMimeHeaderValueChanged(const QString &);
     void slotNewMimeHeader();
     void slotRemoveMimeHeader();
-
-private:
     void doLoadOther() override;
     void doResetToDefaultsOther() override;
 

src/configuredialog/configuresecuritypage.h

@@ -109,10 +109,8 @@ public:
 
     void save() override;
 
-private Q_SLOTS:
-    void slotUpdateHTTPActions();
-
 private:
+    void slotUpdateHTTPActions();
     void doLoadOther() override;
 
 private:

src/identity/xfaceconfigurator.h

@@ -52,7 +52,7 @@ private:
     void crunch(const QImage &image);
     Q_REQUIRED_RESULT bool pngquant(const QImage &image);
 
-private Q_SLOTS:
+private:
     void modeChanged(int);
 
     void compressFace(const QImage &);
@@ -63,7 +63,6 @@ private Q_SLOTS:
 
     void pngquantFinished(int, QProcess::ExitStatus);
 
-private:
     std::unique_ptr<Ui::XFaceConfigurator> mUi;
     QProcess *const mPngquantProc;
 };