Update null-fs and formatexpr settings

fnl/plugin/lsp.fnl

@@ -28,7 +28,6 @@
                                                (= client.name :null-ls)
                                                (= client.name :rust_analyzer)))
                                 :async true }) buf)
-  (vim.api.nvim_buf_set_option buf :formatexpr "v:lua.vim.lsp.formatexpr()")
 
   ;; Some telescope commands
   (bind! :n :<leader>s "<cmd>Telescope lsp_dynamic_workspace_symbols<cr>" buf)
@@ -126,8 +125,8 @@
                                                                      :markdown
                                                                      :tex ]})
                       builtins.diagnostics.cmake_lint
-                      builtins.diagnostics.codespell
-                      builtins.diagnostics.shellcheck
+                      ;;builtins.diagnostics.codespell
+                      ;;builtins.diagnostics.shellcheck
                       (builtins.diagnostics.glslc.with
                         { :extra_args [ "--target-env=opengl" ]})])))