user removed coc

users.nix

@@ -28,7 +28,7 @@ in
   in
   {
     junikim = user { manager = true; name = "junikim"; passwd = "1234"; };
-    a = user { name = "a"; passwd = "1234"; };
+    a = user { zsh = true; name = "a"; passwd = "1234"; };
     b = user { name = "b"; passwd = "1234"; };
     c = user { name = "c"; passwd = "1234"; };
   };
@@ -46,7 +46,6 @@ in
         neovim = {
           enable = true;
           plugins = with pkgs.vimPlugins; [
-            coc-nvim
             neovim-sensible
             vim-airline
             vim-airline-themes