Remove mu4e-conversation and desktop

mu4e-conversation is broken with current mu4e and also unmaintained

desktop pestered me with prompts on nearly every startup and exit;
besides, I was only using it for history, which savehist mode does
just fine. (and unobstrusively at that)

init.org

@@ -3124,15 +3124,6 @@ PR ideas
   :config (setq alert-fade-time 15))
 #+END_SRC
 
-**** mu4e-conversation
-#+BEGIN_SRC emacs-lisp
-(use-package mu4e-conversation
-  :disabled t
-  :ensure t
-  :after mu4e
-  :init (global-mu4e-conversation-mode))
-#+END_SRC
-
 ** doc-view                                                         :viewer:
 #+BEGIN_SRC emacs-lisp
 (use-package doc-view
@@ -5395,77 +5386,6 @@ nicked from wasamasa's init - https://github.com/wasamasa/dotemacs/blob/934d0b37
 ;; (set-face-attribute 'default nil :font "-outline-Bitstream Vera Sans Mono-normal-normal-normal-mono-12-*-*-*-c-*-iso8859-1")
 #+END_SRC
 
-* desktop - session management
-https://emacs.stackexchange.com/questions/31621/handle-stale-desktop-lock-files-after-emacs-system-crash
-#+BEGIN_SRC emacs-lisp
-(defun my-remove-stale-lock-file (dir)
-  (let ((pid (desktop-owner dir)))
-    (when pid
-      (let (infile destination display)
-        (unless (= (call-process "ps" infile destination display "-p"
-                                 (number-to-string pid)) 0)
-          (let ((lock-file (desktop-full-lock-name dir)))
-            (delete-file lock-file)))))))
-#+END_SRC
-
-#+BEGIN_SRC emacs-lisp
-(use-package desktop
-  :disabled t
-  :init (desktop-save-mode t)
-  :config
-  (let ((dir (locate-user-emacs-file "")))
-    (my-remove-stale-lock-file dir)
-    (setq desktop-path (list dir))
-    (desktop-read))
-  (desktop-auto-save-enable)
-  (setq desktop-dirname             "~/.emacs.d/desktop-save/"
-        desktop-save                'ask-if-new
-        ;; don't save buffers, just the history
-        desktop-files-not-to-save   ""
-        desktop-buffers-not-to-save ""
-        desktop-restore-frames      nil)
-  (cl-loop for var in
-    '(grep-history
-      grep-find-history
-      find-args-history
-      extended-command-history
-      read-expression-history
-      default-input-method
-      input-method-history
-      query-replace-history
-      compile-history
-      string-rectangle-history
-      regexp-history
-      dired-shell-command-history
-      dired-regexp-history
-      shell-command-history
-      org-tags-history
-      minibuffer-history
-      erc-server-history-list
-      cp/activity-history
-      LaTeX-environment-history
-      swiper-history
-      counsel-M-x-history)
-    do (add-to-list 'desktop-globals-to-save var)))
-
-;; (add-to-list 'desktop-locals-to-save 'comint-input-ring)
-
-(defun cp/backup-desktop-file ()
-  (let ((new-filename (->> (shell-command-to-string "date -Is")
-                           (replace-regexp-in-string "\n" "")
-                           (concat "~/.emacs.d/.emacs.desktop."))))
-    (copy-file "~/.emacs.d/.emacs.desktop" new-filename)))
-(defun cp/cleanup-desktop-backups ()
-  (let ((desktop-file-backups (-> (concat "find ~/.emacs.d/ -maxdepth 1 -type f |"
-                                          " grep -E \"\.emacs\.desktop\.[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}[-+]?[0-9]{2}:?[0-9]{2}\"")
-                                  (shell-command-to-string )) )))
-  (if (> 10 )))
-;; ;; this one created loads and loads of backups
-;; (add-hook 'desktop-save-hook 'cp/backup-desktop-file)
-;; ;; not enough space for this - wasteful
-;; (add-hook 'kill-emacs-hook 'cp/backup-desktop-file)
-#+END_SRC
-
 * The end
 Reset the GC settings, so Emacs doesn't use up tons of RAM.
 #+BEGIN_SRC emacs-lisp