Remove magit-delta

I'm having some performance issues with it right now, tracking issue for
it:

https://github.com/dandavison/magit-delta/issues/9

config.org

@@ -43,7 +43,6 @@
     - [[#bugfix][Bugfix]]
 - [[#magit][Magit]]
   - [[#gitlab-ci-skip-flag][Gitlab CI skip flag]]
-  - [[#magit-delta][magit-delta]]
 - [[#email][Email]]
   - [[#account-configuration][Account configuration]]
   - [[#sending-mail][Sending mail]]
@@ -538,13 +537,6 @@ not ready yet.
 
 GitLab push options are documented [[https://docs.gitlab.com/ee/user/project/push_options.html][here]].
 
-** magit-delta
-
-#+begin_src emacs-lisp
-(use-package! magit-delta
-  :hook (magit-mode . magit-delta-mode))
-#+end_src
-
 * Email
 
 #+begin_src emacs-lisp :noweb no-export

packages.el

@@ -52,10 +52,6 @@
 ;; C/C++ mode adds this, and I don't really need it
 (package! irony :disable t)
 
-(package! magit-delta
-  :recipe (:host github :repo "dandavison/magit-delta")
-  :pin "5fc7dbddcfacfe46d3fd876172ad02a9ab6ac616")
-
 (package! org-roam-ui
   :recipe (:host github :repo "org-roam/org-roam-ui")
   :pin "9474a254390b1e42488a1801fed5826b32a8030b")