chore(sterni/emacs): remove org-tracker

I have no jira account anymore, so this can be cleaned up.

Change-Id: Iac33832f3933a02ed2ceb0f21ace30be864aba6e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7614
Autosubmit: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>

users/sterni/emacs/default.nix

@@ -37,12 +37,6 @@ let
     epkgs.rust-mode
     epkgs.tvlPackages.tvl
     epkgs.urweb-mode
-
-    # TODO(sterni): until org-tracker is part of depot
-    epkgs.ivy
-    epkgs.dash
-    epkgs.s
-    epkgs.jiralib2
   ] ++ lib.optionals is64bit [
     epkgs.melpaPackages.languagetool
   ]);