chore(nvim): Remove unused util-functions

- Remove relic of effort to force neovim in vs-code
- Remove util functions copied from LazyNvim - if I need them I'll write
  them
- Removed Lua code comments I don't understand
- Better code comments

common/.config/nvim/lua/plugins/formatting.lua

@@ -1,7 +1,6 @@
 return {
     {
         "stevearc/conform.nvim",
-        cond = require("config.util").is_not_vscode(),
         lazy = true,
         event = { "BufWritePre" },
         opts = {