Remove ### Qt 6 comment that we won't address

QStatusBar is 22 years old, and those protected APIs have been around
ever since. There is no good reason to make them private now.

Change-Id: I62624800d8e287e21535967aa6a861b98cae97d5
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
Reviewed-by: Jan Arve Sæther <jan-arve.saether@qt.io>

src/widgets/widgets/qstatusbar.h

@@ -83,7 +83,6 @@ protected:
     void paintEvent(QPaintEvent *) override;
     void resizeEvent(QResizeEvent *) override;
 
-    // ### Qt 6: consider making reformat() and hideOrShow() private
     void reformat();
     void hideOrShow();
     bool event(QEvent *) override;