fix(osx): Remove useless '#ifdef Q_OS_MAC'

src/widget/contentdialog.h

@@ -74,9 +74,7 @@ public:
 signals:
     void friendDialogShown(Friend* f);
     void groupDialogShown(Group* g);
-#ifdef Q_OS_MAC
     void activated();
-#endif
 
 public slots:
     void updateTitleAndStatusIcon(const QString& username);

src/widget/loginscreen.h

@@ -40,10 +40,8 @@ public:
 
     bool event(QEvent* event) final override;
 
-#ifdef Q_OS_MAC
 signals:
     void windowStateChanged(Qt::WindowStates states);
-#endif
 
 private slots:
     void onAutoLoginToggled(int state);

src/widget/widget.h

@@ -160,9 +160,7 @@ signals:
     void usernameChanged(const QString& username);
     void statusMessageChanged(const QString& statusMessage);
     void resized();
-#ifdef Q_OS_MAC
     void windowStateChanged(Qt::WindowStates states);
-#endif
 
 protected:
     virtual bool eventFilter(QObject *obj, QEvent *event) final override;