nixpkgs/neovim: don't add elvish to plenary

telescope uses vim.filetype now which does have elvish already

.config/nixpkgs/neovim/config/plugin/elvish.lua

@@ -1,6 +0,0 @@
--- add extra filetypes for plenary
-require('plenary.filetype').add_table({
-  extension = {
-    ['elv'] = [[elvish]]
-  }
-})