brew/formulae: mpv: remove --with-libbs2b and --with-official-libass options
brew/formulae: mpv: remove --with-libbs2b and --with-official-libass options

Options removed upstream. See
https://github.com/mpv-player/homebrew-mpv/commit/dbc7acf and
https://github.com/mpv-player/homebrew-mpv/commit/72d4f86.

zmwangx/dotfiles,zmwangx/dotfiles,zmwangx/dotfiles,zmwangx/dotfiles,zmwangx/dotfiles