Mac remembers fullscreen

Removes an obsolete workaround to fix a problem with the program not saving your window settings on Mac. #21696

src/openrct2-ui/UiContext.cpp

@@ -763,11 +763,8 @@ private:
         UpdateFullscreenResolutions();
 
         // Fix #4022: Force Mac to windowed to avoid cursor offset on launch issue
-#ifdef __MACOSX__
-        gConfigGeneral.FullscreenMode = static_cast<int32_t>(OpenRCT2::Ui::FULLSCREEN_MODE::WINDOWED);
-#else
+        // Fix #21696: Workaround is obsolete, removed
         SetFullscreenMode(static_cast<FULLSCREEN_MODE>(gConfigGeneral.FullscreenMode));
-#endif
         TriggerResize();
     }