refactor(notable): Remove dependency on dash

It was only used for #'-each, for which the built-in dolist is sufficient.

Change-Id: I326d8b733b36b2edfebd4e9384e70b8a570fee0f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1987
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>

tools/emacs-pkgs/notable/default.nix

@@ -5,7 +5,7 @@ pkgs.emacsPackages.trivialBuild rec {
   version = "1.0";
   src = ./notable.el;
   packageRequires = with pkgs.emacsPackages; [
-    dash f ht s
+    f ht s
     depot.tools.emacs-pkgs.dottime
   ];
 }