Remove unnecessary macos focus check
Remove unnecessary macos focus check

Since winit now filters out clicks on unfocused windows on macOS
anyways, we don't need to implement this logic ourselves anymore.
jwilm/alacritty,alacritty/alacritty,alacritty/alacritty,jwilm/alacritty,jwilm/alacritty,jwilm/alacritty