nix/nvim: rm treesitter from config.vim

nix/progs/nvim/config.vim

@@ -125,30 +125,3 @@ nnoremap <leader>sv :source $MYVIMRC<CR>
 
 cabbrev bsp belowright split
 cabbrev rvsp belowright vsplit
-
-" TreeSitter
-lua << EOF
-require'nvim-treesitter.configs'.setup {
-  -- A list of parser names, or "all"
-  ensure_installed = {
-    "nix",
-    "typescript",
-    "tsx",
-    "rust",
-    "haskell",
-    "json",
-    "yaml",
-  },
-
-  -- Install parsers synchronously (only applied to `ensure_installed`)
-  sync_install = false,
-
-  highlight = {
-    enable = true,
-  },
-
-  indent = {
-    enable = true,
-  },
-}
-EOF