- `popup.nvim` is not referenced anywhere within the plugin and as such
should be removed.
- `playground` is not needed either, it's not referenced and secondly
the most important feature from it (:TSPlayground) is covered by
Neovim's :InspectTree command in more recent versions of Neovim.
Closes#203 (https://github.com/windwp/nvim-ts-autotag/issues/203)