chore(tazjin/emacs): Remove org-journal

I haven't used this much in the last months and it's causing issues
via some hook now, so bye bye.

Change-Id: If2b321887569b31c0ac7ad3fdd1b9c1d9f7b69f7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2344
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI

users/tazjin/emacs/default.nix

@@ -73,7 +73,6 @@ let
     nginx-mode
     nix-mode
     notmuch # this comes from pkgs.third_party
-    org-journal
     org-ql
     paredit
     password-store