chore(3p/emacs): Remove obsolete third-party packages

We don't need these in the depot anymore as the Emacs overlay now
provides newer versions of them, or because they are not used anymore.

Change-Id: I393e1580b66450d0bb128213bc79668172dadacc
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3005
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>

users/grfn/system/home/modules/emacs.nix

@@ -47,9 +47,9 @@ in {
         enable = true;
         package = pkgs.emacsUnstable;
         extraPackages = (epkgs:
-          (with epkgs.tvlPackages; [
-            dottime
-            tvl
+          (with epkgs; [
+            tvlPackages.dottime
+            tvlPackages.tvl
             vterm
           ])
         );