update to autoexec and neovim

.config/nvim/ftplugin/tex.lua

@@ -5,5 +5,4 @@ vim.opt_local.spelllang = { "en_gb", "de_de", "fr" }
 -- Niceties for prose/math
 vim.opt_local.wrap = true
 vim.opt_local.linebreak = true
-vim.opt_local.conceallevel = 2 -- vimtex has sensible conceal defaults
 vim.opt_local.textwidth = 0 -- don't hard-wrap LaTeX