macOS: Remove unused method QCocoaWindow::nativeWindowGeometry

Its usage was removed in ef32f16fc2.

Change-Id: I5101131e401e615231ab05b241dd5b670f6a5a61
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>

src/plugins/platforms/cocoa/qcocoawindow.h

@@ -209,8 +209,6 @@ protected:
     void recreateWindowIfNeeded();
     QCocoaNSWindow *createNSWindow(bool shouldBePanel);
 
-    QRect nativeWindowGeometry() const;
-
     Qt::WindowState windowState() const;
     void applyWindowState(Qt::WindowStates newState);
     void toggleMaximized();

src/plugins/platforms/cocoa/qcocoawindow.mm

@@ -1443,19 +1443,6 @@ void QCocoaWindow::removeMonitor()
     monitor = nil;
 }
 
-// Returns the current global screen geometry for the nswindow associated with this window.
-QRect QCocoaWindow::nativeWindowGeometry() const
-{
-    if (!isContentView())
-        return geometry();
-
-    NSRect rect = m_view.window.frame;
-    QPlatformScreen *onScreen = QPlatformScreen::platformScreenForWindow(window());
-    int flippedY = onScreen->geometry().height() - rect.origin.y - rect.size.height;  // account for nswindow inverted y.
-    QRect qRect = QRect(rect.origin.x, flippedY, rect.size.width, rect.size.height);
-    return qRect;
-}
-
 /*!
     Applies the given state to the NSWindow, going in/out of minimize/zoomed/fullscreen