git: Move to own configuration for (ma)git

Magit is now configured together with all git related config that may
possibily come in the future.

.emacs.d/config/dev.el

@@ -1,22 +1,3 @@
-;; magit
-(use-package magit
-  :ensure t
-  :init
-  ;; (taken from :open https://r0tty.org/git/dotfiles/emacs/tree/.emacs.d/config/development.el)
-  (defun vcsh (repo)
-    "Invoke magit on a vcsh repo. This requires an appropriate entry in `tramp-methods'."
-    (interactive (let ((repos (delq nil
-                                    (mapcar #'(lambda (name)
-                                                (if (string-match ".git$" name)
-                                                    (substring name 0 -4)
-                                                  nil))
-                                            (directory-files "~/.config/vcsh/repo.d")))))
-                   (list (completing-read "Repository: " repos nil t))))
-    (magit-status-internal (format "/vcsh:%s:" repo)))
-  :config
-  ;; Turn on flyspell when writing commit messages
-  (add-hook 'git-commit-setup-hook 'git-commit-turn-on-flyspell))
-
 ;; paredit
 (use-package paredit
   :ensure t