The file was removed in 16f2c7bb89 (Remove unused samples resource files, 2021-10-20) merged as part of 3d5664cabe (Merge branch 'samples-dpi-v2-aware', 2021-10-25). Closes https://github.com/wxWidgets/wxWidgets/pull/2565
16f2c7bb89
3d5664cabe