nvim: Disable uninstalled python language servers

Had to manually disable python lsps that are not on my system since
neovim otherwise complains about it whenever I enter a new python
filetype file.

nvim/.config/nvim/lua/plug/_lsp.lua

@@ -92,6 +92,7 @@ local sumneko_root_path = "/usr/share/lua-language-server"
 require'navigator'.setup({
     lsp = {
         servers = {'efm'},
+        disable_lsp = {"pylsp", "jedi_language_server"},
         sumneko_lua = {
             cmd = {
                 "lua-language-server", "-E", sumneko_root_path .. "/main.lua"