Remove unused pointer to DisplayApp member variables (#2125)

In the screens that use `DisplayApp *app` and pass it to a child item,
or use the reference just in the constructor. Afterwards the `app`
member is not used. So remove it from the private member variables.

Completely remove `app` parameter from `SettingDisplay` constructor as
it is unused.

1 files changed, 0 insertions, 1 deletions

diff --git a/src/displayapp/screens/settings/SettingWatchFace.h b/src/displayapp/screens/settings/SettingWatchFace.h
index 4c75b0ab..9edc1f7a 100644
--- a/src/displayapp/screens/settings/SettingWatchFace.h
+++ b/src/displayapp/screens/settings/SettingWatchFace.h
@@ -34,7 +34,6 @@ namespace Pinetime {
         bool OnTouchEvent(TouchEvents event) override;
 
       private:
-        DisplayApp* app;
         auto CreateScreenList() const;
         std::unique_ptr<Screen> CreateScreen(unsigned int screenNum) const;